Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a4703c7d707c649…

MALICIOUS

PDF

43.0 KB Created: 2020-08-19 10:22:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c780b07ae872c55f0f762fa5f007afbb SHA-1: b3ee3486bbe91bc89b01e723b85aa1a3bcf77a73 SHA-256: 6a4703c7d707c649c445f83b1214b94fdde17ecfd63ff79cf42cacec142b63de
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.ru/pify?keyword=authentication+problem+android+phone`. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous other PDF links, many pointing to benign Shopify domains, indicates a link farm strategy to obscure the malicious destination. No scripts were extracted from this sample.

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=authentication+problem+android+phone In PDF document text
    • http://files.autisticadults.com/uploads/1/3/1/6/131637043/sizonokemademu.pdfIn PDF document text
    • http://dosigudit.mys4.org/uploads/1/3/0/7/130776525/8c8916f92630be.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/1/0433/6248/4383/files/27192316602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/past_simple_regular_verbs_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1795/9586/files/5000_frases_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fejekav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3964/6108/files/good_discord_server_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97046042130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3012/6490/files/automatic_identification_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/58607442842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1513/files/alone_movie_video_song_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/62459073484.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_off0000686a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686A 5264 bytes
SHA-256: adf08b637e510c4ca3c376261bda56c7f6b0cb6527607de40b6d99576829b2f9
font_01_sfnt_off00007a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0D 10880 bytes
SHA-256: 729c41a676ac2e2d2c2004d1ffd8543602786cdaa8126870c0d774769797d9d0

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