PDF malware analysis — malicious · d12b3262b771a372

MALICIOUS

PDF

79.8 KB Created: 2021-09-07 17:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: f4a086076392589b9beed6cd71bd0a50 SHA-1: 9211e62ef2b8cf78bb1a54f7246b96b5268167f4 SHA-256: d12b3262b771a372ad348ee10b87f0d32afd1919915e01332ca3bcc9d21634fb

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to other PDFs hosted on compromised or disposable domains. These linked PDFs likely serve as lures for phishing or to distribute further malware, aligning with spearphishing attachment tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9846

Heuristics 6

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.
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://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/ff6fd2d434f5164400fd5fd00c1993df/3722783120.pdf In PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b48405d9f21---42730621893.pdfIn PDF document text
- https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/bba074ad311e6cd27862824b45a4caa6/43183593179.pdfIn PDF document text
- https://sofahatinh.com/upload/files/15777480088.pdfIn PDF document text
- https://floridahouselottery.com/test/userfiles/file/78124031278.pdfIn PDF document text
- https://ludifrance.fr/userfiles/file/pezuxuviv.pdfIn PDF document text
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/a924592722ceefd8762ad8eb84a2fcc3/xiwopelaniwinakafeza.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/33522680049.pdfIn PDF document text
- http://hart-metale.pl/gimnazjum/userfiles/file/60053486330.pdfIn PDF document text
- http://goodtraefarm.com/ckupload/files/87345922957.pdfIn PDF document text
- https://fuze-pay.com/ckfinder/userfiles/files/loxewitesifazezog.pdfIn PDF document text
- https://ascend.sut.ac.th/ce/2017/src/plugins/ckfinder/userfiles/files/tewexagetufijatofika.pdfIn PDF document text
- http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f24a8a2b56a---55610112315.pdfIn PDF document text
- http://asbazainville.org/userfiles/file/duregi.pdfIn PDF document text
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1611c499848a9a---bevesinozanam.pdfIn PDF document text
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/c4ca4734bc0f3810e2576f4f712e47ad/zukusumojukuzen.pdfIn PDF document text
- http://hasici-pristroje-eshop.cz/files/file/juvufaxovi.pdfIn PDF document text
- https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/c7ce6938b352a4a03f066c77052cefd4/xesezepoxanezuzozo.pdfIn PDF document text
- http://autosoftware.company/autoresponders_images/files/49825930819.pdfIn PDF document text
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/edda972efcfbf87e1b62afe87a39605f/14083640616.pdfIn PDF document text
- https://afayl.com/userfiles/file/34475891765.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a7a07e8204---95097891652.pdfIn PDF document text
- https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/9747e015a75e5849b8f991c993a56a70/53926615456.pdfIn PDF document text
- http://elitaliaweb.it/upload/file/36315466832.pdfIn PDF document text
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd31a283a33---wewofipuxegumuruwizepa.pdfIn PDF document text
- http://chapelguild.com/images/usr/favubetefubi.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=functions+of+nouns+worksheet+with+answersPDF link annotation
- 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_off0000d677.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD677	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ee89.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE89	16460 bytes
SHA-256: `8db662e6c8ce729932f95d464bdfa1d0710d7a0f1aae4ae858f8f17f560f45a5`
`font_02_sfnt_off000118d6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118D6	10640 bytes
SHA-256: `dbf15073eccf421bae870ce6bb060a254f47b99510d270aa84800cfe5eda465d`

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