PDF malware analysis — malicious · c2997c6adf7c891b

MALICIOUS

PDF

73.3 KB Created: 2021-09-05 09:25:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31

MD5: 9e5e99ebdb10b8017d4046922fb9eaf2 SHA-1: 243491dac3deaf326f1ff7a0fd1dceed5f8db7f0 SHA-256: c2997c6adf7c891ba1573bcd21a0576fd8a5686d068a9c5bc7d5e7c283cc7083

176 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The heuristics indicate it functions as a link farm and a callback lure, prompting the user to contact a number under the guise of a billing or support issue. While no scripts were extracted, the embedded URLs suggest a phishing or scam attempt, likely leading to further malicious content or exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://chcial.ru/uplcv?utm_term=gessi+emporio+pdf PDF link annotation
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c1ad5d090e---74835783686.pdfIn PDF document text
- http://healhumanity.foundation/userfiles/file/56154207464.pdfIn PDF document text
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/81e6e1c9d0f1ef691414825be16e5468/81455770510.pdfIn PDF document text
- https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/2a750c422e6a576f95765480f6b42e9d/xalomimibedi.pdfIn PDF document text
- https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/levue2cca016o0riacg57rvf5f/feforofigisaxe.pdfIn PDF document text
- http://evpltravel.com/xv_image/file/pujufipokaxobudikoxe.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610ee52aacafc---wepubumop.pdfIn PDF document text
- http://amsuatrust.org/survey/userfiles/files/91814897380.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16095244a47c61---xakija.pdfIn PDF document text
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/4017f55ada161837e738c3786cb551e7/ziwenogugofifuvak.pdfIn PDF document text
- https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/6fdah252m7mbka0dgahj5njd6q/gatorodidataxoro.pdfIn PDF document text
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/b49b3855f9820d4231e990f26f2cace0/28034152351.pdfIn PDF document text
- https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/07mv8of7k21tf05g0r3ns7hsbi/36307263978.pdfIn PDF document text
- http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c7048d463fc---tixivowetanuroligeme.pdfIn PDF document text
- https://asiajitu.com/contents//files/pepiwo.pdfIn PDF document text
- https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/5dmlhacnutab89q2sjcfjiisr7/wazovi.pdfIn PDF document text
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/gcdtvk3ji9h51j8i68647g5u9f/golovivigijevugulewid.pdfIn PDF document text
- https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/529583d02e28046e381a854442bff59d/buged.pdfIn PDF document text
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f53fb582ce6---99612150837.pdfIn PDF document text
- http://zavalinka.by/var/upload/file/tupujuludakorubolupal.pdfIn PDF document text
- https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/l9u0um57dicl6anfatnn1kulgq/66489661156.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070fdcbf3bce---18933406073.pdfIn PDF document text
- http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609411e95041c---4438078199.pdfIn PDF document text
- http://perksys.com/userfiles/file/34542364559.pdfIn PDF document text
- http://reneenicoleevents.com/clients/865995/File/rewuwe.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000bed2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBED2	16236 bytes
SHA-256: `0423265470f5e0ec5f955403f48e909e65f143e4af041eeb18cab30c34485ad0`
`font_01_sfnt_off0000e8c5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8C5	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000100dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100DC	10288 bytes
SHA-256: `d592431f53e4e29d924b1360d723ce91e4a6e9733ff16ab5efc00e6bf084d78f`

Open this report in the interactive analyzer, or submit your own file for analysis.