Malicious PDF — malware analysis report

Static analysis result for SHA-256 d730ff5cfc33740e…

MALICIOUS

PDF

44.7 KB Created: 2020-08-23 00:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e606caa0523d97b86d51f1f643021e6b SHA-1: afb9711eff17d19e4847a390305f85e86b15dc3d SHA-256: d730ff5cfc33740e62595b8d7f53a155fc66eece3c67a7cff93ff7410366008d
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as information about the 'Blue Whale' game. The document also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or distribution mechanism. The ML classifier strongly indicated maliciousness, supporting the observed malicious redirector.

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.cc/pify?keyword=informatii+despre+jocul+balena+albastra In PDF document text
    • http://files.merrittathletics.com/uploads/1/3/1/3/131398195/gijofi_nifut_paduziba_vudinudaneb.pdfIn PDF document text
    • http://wugemikos.taylorjordanusa.com/uploads/1/3/2/8/132815094/d751a19208e54.pdfIn PDF document text
    • http://files.ststephenriverrunners.com/uploads/1/3/1/4/131438692/navinawevopi.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/1/0430/6557/3537/files/97117000072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/bedosopomasonake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6594/1922/files/51649316929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1619/9064/files/supaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/prostate_cancer_pathology_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0988/3550/files/whatsapp._ipa_free_for_ipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3218/0893/files/jeborel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4243/1395/files/mukeremojugenefunar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/dopaligexujigazeruxi.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 6

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_off00006e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9D 5452 bytes
SHA-256: d508417731afa4bbbfcd0a36c50ab32bf9ebceb1f9260929e6032675fc998f59
font_01_sfnt_off00008104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8104 11068 bytes
SHA-256: cb081ab0d836c8ae85c7a06742d07bf0ffb2f1a8642891a781026a2b9c284f5f

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