Malicious PDF — malware analysis report

Static analysis result for SHA-256 235bbe4150ea9fcb…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 14:22:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6528ce581b1bc4453f81acab1f8b9594 SHA-1: 028207a64752e4f266523064bdf03035c2e2f091 SHA-256: 235bbe4150ea9fcbce6091c8ed1fe977d546e9cbb52e5bc95482b79f09900790
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which are hosted on Shopify but ultimately redirect through a known malicious domain, ttraff.ru. This indicates a link farm or SEO poisoning tactic designed to lure users to malicious infrastructure. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is the primary indicator of compromise.

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=datasheet+2n2222+metalico In PDF document text
    • http://files.rocykafotografie.nl/uploads/1/3/1/4/131454221/6072518.pdfIn PDF document text
    • http://files.ltowngaragellc.com/uploads/1/3/1/3/131379594/lobowifebugos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/47066702867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0590/files/games_for_pc_dolphin_emulator_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/kilcummin_surf_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8325/files/pyrimidine_metabolism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7507/6258/files/chhota_bheem_song_please.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/88039259467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57727452667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4939/2030/files/xirolitebajelazog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7548/5339/files/22798196530.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 3

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4229 3576 bytes
SHA-256: 5ebcf4e12fc1e02633c320b10ce3a295e3420fef9cfd345f44ab3a9f3b09b232
font_01_sfnt_off00004ef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF4 4860 bytes
SHA-256: 9d56c5ab5ee06726466f4416a741108a277d5666a7949417d9b159a62f3c3127
font_02_sfnt_off00005f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F45 12892 bytes
SHA-256: 0f903dbf76dab80629986aed1004f5b2c9f640af3228ea863f4a4c3352de8379
font_03_sfnt_off00008790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8790 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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