Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8ce5b5c2e7c44f9…

MALICIOUS

PDF

41.5 KB Created: 2020-08-15 16:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e886c2e23d7b2b339fe398194bd0254 SHA-1: e0d7e5e14a50b657f44b71cd6c075382522ccf2d SHA-256: b8ce5b5c2e7c44f911455c4ea42d1289f6eb1d83090b3c55a6193417125d01c0
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.ru. Additionally, it exhibits a PDF link farm, with 28 external links, many hosted on cdn.shopify.com. The document body contains the URL https://ttraff.ru/pify?keyword=measurement+worksheets+cm+mm+m, which is likely used to lure users into clicking malicious links. 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=measurement+worksheets+cm+mm+m In PDF document text
    • http://files.funprintablesforkids.com/uploads/1/3/1/4/131438464/c1a1bc.pdfIn PDF document text
    • http://files.exploretransform.com/uploads/1/3/0/7/130776016/2595837.pdfIn PDF document text
    • http://files.thenakeddogboutique.com/uploads/1/3/2/3/132303307/fizuze_xadojiteronor_pewozawip_bigovul.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/1/0433/6012/5080/files/wakogodimoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/wewizarodazituxajes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/85445693677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8466/1414/files/28835136824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/coller_deux_fichier_ensemble.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/23427389749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4161/8082/files/brunner_and_suddarth_11th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/18168325659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/rerarowilebasew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8876/0232/files/tonojasuroxun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/95800333851.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6578 5168 bytes
SHA-256: 7d1ecf13de5be741e866d6aae51bb8f91720babb3f60083d667102af4d431521
font_01_sfnt_off000076ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76EF 10052 bytes
SHA-256: 4c450876c358039113e0e308b51e1f4f13bdadfe21b507f703f30413f578df65

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