Malicious PDF — malware analysis report

Static analysis result for SHA-256 5233798a2a4c65ab…

MALICIOUS

PDF

42.9 KB Created: 2020-08-21 17:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 163f12cc5d5e3f65d6529e641490a648 SHA-1: 2f29eedad3ec6a8fe9b72b95f41b6b898cfa17c1 SHA-256: 5233798a2a4c65abaa36d435ae4e3f5302db8f301a1161219aac21f10a7f716e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link to 'ttraff.ru' is identified as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Manheim used car report 2019' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of a link farm and a malicious redirector indicates a likely SEO spam or phishing campaign.

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=manheim+used+car+report+2019 In PDF document text
    • http://files.cindymcmillionphotography.com/uploads/1/3/2/6/132695915/numifatobifalude.pdfIn PDF document text
    • http://files.neplus.co/uploads/1/3/2/7/132711966/6fe5d309b4c322.pdfIn PDF document text
    • http://files.buckinghamprimary.com/uploads/1/3/1/3/131380005/6004225.pdfIn PDF document text
    • http://mebetajim.bluethunderbirdwoman.com/uploads/1/3/0/7/130739892/ruwetezare.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/1/0433/0697/5382/files/21326264692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3996/files/mugukep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6351/7092/files/47269208977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0329/5382/files/72444041750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2623/6063/files/carbohydrates_monosaccharides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4561/6792/files/worth_it_full_video_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3388/files/reasons_students_should_not_wear_school_uniforms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/jurinikif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7500/9686/files/87527536169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/2417805709.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 8

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_off0000670b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670B 5768 bytes
SHA-256: 9a39be58db74d332005c54359e5bf6a1ec2b7f67fcc4b77affe1c3a93379279d
font_01_sfnt_off00007a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A77 10524 bytes
SHA-256: 728e00fa726ff6bb3e93bf3d6f7e9d010fd0883c19c2d87a2ddfeda128a87d98

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