PDF malware analysis — malicious · e2d446fe55acab24

MALICIOUS

PDF

83.6 KB Created: 2021-09-07 14:14:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 890e2f58168ab550ceb2d59bc5e1461b SHA-1: 7fe2089f70cd3961fb116b082ea1d7e2b6685014 SHA-256: e2d446fe55acab241726954608627b8856ba4898fe6e9d5fe386dd7f1d74bac8

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains numerous links pointing to various websites, many of which appear to be compromised CMS uploads, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted from this sample, but the presence of external URIs and the link farm structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9911

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
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://allytemp.ru/uplcv?utm_term=cracking+the+genesis+code+pdf PDF link annotation
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd1f503bd24---domatelosawetubamoxaz.pdfIn PDF document text
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/8aa07b11bc886c5a405928583fdf3870/gowobog.pdfIn PDF document text
- https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/7f65a9a5a873b2b61999e74c74dae35a/sizale.pdfIn PDF document text
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/2ca1718c914f8c97fcd3e199b855a4d6/gugexelizutax.pdfIn PDF document text
- http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160fd9f4706fc0---70792922331.pdfIn PDF document text
- https://nestuby.com/userfiles/file/tujopavivefupasonexo.pdfIn PDF document text
- http://hometextiles-consultant.com/ckfinder/userfiles/files/25195754247.pdfIn PDF document text
- https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/77d86de16c83daae78a5ab43107f1375/korodileli.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/s1scoblnspsilmkucugqc6kp05/71428244876.pdfIn PDF document text
- https://incoyun.com/calisma2/files/uploads/54731673956.pdfIn PDF document text
- https://thieumaunao.vn/workspace/develop/uploads/ck_upload/files/48746075431.pdfIn PDF document text
- http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16089c24e90bda---nuvatelasixezubodevono.pdfIn PDF document text
- https://bibliothequeanglaise.org/upload/files/xenitajogawimodebilo.pdfIn PDF document text
- http://jakpaisanestate.com/images/upload/files/latat.pdfIn PDF document text
- https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/d0349c344aa27d668eb1ee2158b562a4/ratidivegigifun.pdfIn PDF document text
- http://goteneplast.se/files/images/file/83040967227.pdfIn PDF document text
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1609219e8988f9---xulevolovewotos.pdfIn PDF document text
- https://tonmathunglan.vn/upload/files/wijavagerigovux.pdfIn PDF document text
- http://aal.tw/uploads/htmlupload/files/voluneverewoladabudot.pdfIn PDF document text
- http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b83de6873bf---vutapamavutagowutopi.pdfIn PDF document text
- https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/jhs7s34e13ef9tc7p1071p0up2/9314733540.pdfIn PDF document text
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a7f06ca6---94075167388.pdfIn PDF document text
- http://dianacb.cz/userfiles/file/bexidusijax.pdfIn PDF document text
- https://bhiringisamsankalimandir.org/userfiles/file/36219413693.pdfIn PDF document text
- https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/11bd55d546ade924426c3870f85ba5ab/20860931115.pdfIn PDF document text
- https://mimpidia.com/contents/files/1598437276.pdfIn PDF document text
- https://buka.ru/sadm_files/kizuduzabevotaposijepo.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_off0000e0da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0DA	18072 bytes
SHA-256: `f7196f083e72cac1a814cd9671aca437f929eedc7875b022a0ebf4794abf931c`
`font_01_sfnt_off00010f02.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F02	10976 bytes
SHA-256: `09c6877286556aa8c72aaac408dc5066e47a4379c6630ef049abde81616ad6bc`
`font_02_sfnt_off00012847.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12847	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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