PDF malware analysis — malicious · cf89652e305c39a7

MALICIOUS

PDF

99.4 KB Created: 2020-11-19 06:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05

MD5: 2326dcfd6cd6c6535ab964dbdd28eb25 SHA-1: 6211ef1cf90d17e50a2a3e9a9cba30f013b8d36c SHA-256: cf89652e305c39a76241e455b1c8c4ba8ea4c6fa5249794ab1e9c12ae365f17e

254 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to redirector infrastructure like 'cctraff.ru'. Heuristics indicate this is a malicious redirector and part of an SEO link farm, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a common phishing or malware delivery technique.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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://cctraff.ru/123?utm_term=white+vinyl+wrap+for+cabinets In PDF document text
- https://cdn-cms.f-static.net/uploads/4402297/normal_5f9940abefa25.pdfIn PDF document text
- https://rukuzidin.weebly.com/uploads/1/3/4/5/134517246/kesedimufi.pdfIn PDF document text
- https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/kawobu.pdfIn PDF document text
- https://jijibaduwa.weebly.com/uploads/1/3/4/4/134495912/xemenilikizo-giwabinetejozeg-wazuripenerebam-jusejipan.pdfIn PDF document text
- https://rimofunoduw.weebly.com/uploads/1/3/4/5/134525219/de0616.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/jasadavebaga/zimoxoxasefufifu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c998f5dd-5c9d-439e-b3d6-620a69c7ce6a/wojogafurixusibexudesoma.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7ae4b849-ed6a-4a8b-b3dd-dcfa51d7feba/5367398905.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/18e254cb-95cb-4fa9-bb8c-d1e28535e7b1/vobovokisizodewiz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/326683a0-3a55-46ca-aea9-bc2ffb6a81e7/xemanomekapemano.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1d7401ab-042c-40a2-b4b9-50da7865b7d5/english_as_a_second_language_books.pdfIn PDF document text
- https://s3.amazonaws.com/bepukuba/dave_grohl_net_worth_2020.pdfIn PDF document text
- https://s3.amazonaws.com/wilugugo/37605966746.pdfIn PDF document text
- https://s3.amazonaws.com/jedobufudajewu/flash_player_browser_android_apk.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://scripts.sil.org/OFLIn 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_off00012e7e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E7E	5512 bytes
SHA-256: `18ebe0d989ee0be01e70f3c6afc383750f1419d492a317cd82ba1ae5d123f4f5`
`font_01_sfnt_off00014153.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14153	10796 bytes
SHA-256: `efcb0a6c0f4addf10fad392a393f10d25200e2bd59beade625e7d1494e247f84`
`font_02_sfnt_off00016600.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16600	17356 bytes
SHA-256: `9ce0238e17673fab90548bfe6597377193f8fdb86df7489e065ffd2abe7d0a16`

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