Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc916c9f04a8c33…

MALICIOUS

PDF

44.5 KB Created: 2020-07-31 05:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c094493da80c7e75fee5e92da183912 SHA-1: e0715d762061f124771e8ecea30a87f40aee6aba SHA-256: 9dc916c9f04a8c3376e4802ed4516aa139b931daad422bcdfbc550a99efb97aa
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, another critical heuristic identified a mass external PDF link farm, with many links hosted on 'cdn.shopify.com'. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of these malicious links suggests the document is intended to lure users to malicious sites.

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.com/pify?keyword=the+2020+acr+eular+classification+criteria+for+rheumatoid+arthritis+pdf In PDF document text
    • http://files.megabiteschocolate.com/uploads/1/3/1/4/131438274/kuvajut.pdfIn PDF document text
    • http://files.westtabernaclembc.org/uploads/1/3/0/7/130740066/luzelozokid.pdfIn PDF document text
    • http://files.mycphoa.com/uploads/1/3/0/7/130738779/lasasidop.pdfIn PDF document text
    • http://files.lisuntimor.com/uploads/1/3/0/9/130969663/8ae99b218d3cd2f.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/1/0427/9926/8003/files/40278490202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4317/7126/files/vefamivisipogapawusitil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3602/4742/files/lenaval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0704/7840/files/59299678241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/ropusijopibuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/wumuwibujunevojarow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4643/6006/files/841551534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8711/files/16721199372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/39351436357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5706/1788/files/81825722522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25006313747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/86294167020.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_off00006f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F71 5500 bytes
SHA-256: e836678825c7ac6f92c2a6121232d0b99bbd73f77797bf86680722a70270a13a
font_01_sfnt_off000081e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E7 10036 bytes
SHA-256: 8d976ee74751f0acd39b98607337783380c2d70e0f19dcf870ce9b2aca1a57cf

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