Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b039122e00fa8e6…

MALICIOUS

PDF

41.1 KB Created: 2020-08-19 02:07:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: edbb5b1248cccb5246183486e642eb00 SHA-1: c1dce9e5567c1de32f37b1ac9afecdc8af65ac15 SHA-256: 9b039122e00fa8e6de0188c0d5420bcbd2be804ab34c51ac64943d3d88e3036b
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests the document is part of a link farm or SEO poisoning campaign designed to lure users to malicious sites. The ML classifier strongly supports the malicious verdict.

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=friday+night+lights+episode+guide+season+4 In PDF document text
    • http://files.alexandroquerevalu.eu/uploads/1/3/2/7/132740997/3890936.pdfIn PDF document text
    • http://loviri.brewingtonpreciousdanes.com/uploads/1/3/1/6/131636725/358d5.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/1/0431/4939/4080/files/xigub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7506/6273/files/noxiwoxonebapin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7276/6630/files/satekenabiboveramugijafun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9032/1313/files/20161081702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4508/4574/files/pupirefisowimatir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0395/0742/files/ielts_listening_test_tips.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duzibuwusupamodugibeboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/56986993118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8387/files/everlong_acoustic_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6899/7283/files/33324322963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/speech_banana_audiogram.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 4

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_off00006398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6398 5368 bytes
SHA-256: 11b0556cdb0c7217a25fa1f4563ce9d7bf74e3bbea6f40b04272db58ffa86143
font_01_sfnt_off000075da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75DA 9920 bytes
SHA-256: 8c8ab0b4c670e93abc08d0057caa303db663077b0918fc1faf90c3bb0dfd6c06

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