Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6fef1ec834261ca…

MALICIOUS

PDF

45.6 KB Created: 2020-08-18 21:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e17f38a11d5d3a0b1c727daeaff3b0f5 SHA-1: c8cc856c87f2f30157a97a397da6787232723673 SHA-256: a6fef1ec834261cacd0ff51f046cfbc27c2d4f52f97d312e0d6dc1263b6294d7
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify URLs, but one critical link directs to a known malicious redirector at ttraff.com. This redirector is disguised with a query parameter suggesting a 'decision making presentation template', indicating a social engineering lure. The ML classifier strongly supports the malicious nature of this PDF. The primary attack pattern involves tricking the user into clicking the malicious link, which then likely leads to further compromise.

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=decision+making+presentation+template In PDF document text
    • http://files.ccmasonicdesigns.com/uploads/1/3/0/7/130776162/dizazudotedu-zutawup-xerebidojofe-rarilesuxo.pdfIn PDF document text
    • http://files.wahidomarata.com/uploads/1/3/2/6/132695492/1eefb160.pdfIn PDF document text
    • http://files.riverwalkadultdayservices.com/uploads/1/3/2/6/132681556/rixoxatuvanun_xerifosotubul_badafurupakum_dexumegapo.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/1/0430/7252/0352/files/braveheart_piano_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8992/files/marketing_campaign_proposal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/81114519825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5668/5468/files/zufavepobigaweso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/50035563305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/lilagaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5269/4680/files/60290798348.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_off0000756e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x756E 5316 bytes
SHA-256: 4cebb310218bc4f10c9506d897626f1e08bb3b88b045cc3f025eff6d59ab4479
font_01_sfnt_off0000876d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876D 10060 bytes
SHA-256: f3673a68a726b57cb0041074062725ae4d618fe55e87d46a29db1b87e0bb5180

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