Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b34dbff0c64167…

MALICIOUS

PDF

41.4 KB Created: 2020-08-20 02:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf8d393b1cfbf11ec878b08dc9ceb243 SHA-1: b1b69d9c5141b42e9462aba0ecc25c11a9062ffa SHA-256: e2b34dbff0c64167817b25d3ddc2b97a3e07c09ede51b7f8923e40987566daad
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though obfuscated, contains the same URL, suggesting a phishing or malware distribution lure. The heuristic firings confirm the presence of malicious redirector links and a link farm designed for SEO manipulation, likely to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.ru/pify?keyword=osazone+formation+of+fructose In PDF document text
    • http://xifuz.mcaassociates.com/uploads/1/3/1/4/131453823/kalesovudon-bekazavokuj-wuwituvumodazo-jejija.pdfIn PDF document text
    • http://files.ciremaitrail.com/uploads/1/3/0/7/130739978/bepapujilakomi.pdfIn PDF document text
    • http://vugidaba.careertherapy4me.com/uploads/1/3/2/6/132682076/dudar.pdfIn PDF document text
    • http://puzana.wardensworld.com/uploads/1/3/2/6/132680848/womowupad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9234/4999/files/baxitisawax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1222/7225/files/papipexikubepamulemunoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/82593089068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/53324008443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/13118612886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0422/1849/files/37413584677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6471/2599/files/biff_loman_in_death_of_a_salesman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1344/6564/files/dobuwavazarexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8126/9401/files/happy_birthday_song_punjabi_djpunjab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/2002_pt_cruiser_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4491/2802/files/zifufedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5679/8615/files/37037079060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/57952139159.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D2 5072 bytes
SHA-256: 126fff704fb86fa08d2a800abc67bee34a32f0cf303080bf0392a1decf5dadb9
font_01_sfnt_off000074fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FE 10384 bytes
SHA-256: 38b07310480a2fdf0d3ac2c077e206a5f24f4fc522beac503a11fca3cc0f28ef

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