Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c0f855762d30d6…

MALICIOUS

PDF

48.8 KB Created: 2020-08-08 17:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9456a6437fd031c9591853d12d7ff18 SHA-1: fb49dcee2d2fc999a5acafd96a841959583682b5 SHA-256: 66c0f855762d30d69cac41cf3f586f575d06e99ae3c27511a967eaa078e0638b
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body and embedded links attempt to lure the user into clicking these links by impersonating Adobe's PDF export service. The presence of a large number of SEO-optimized PDF links suggests a link farm or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=adobe+exportpdf+sub+adobe+systems+san+jose+ca In PDF document text
    • http://files.singleparents.co.nz/uploads/1/3/1/4/131407709/fuwaweleveda_nikalumezu.pdfIn PDF document text
    • http://files.leggsmanufacturing.com/uploads/1/3/2/7/132710776/wunukemerosopajusup.pdfIn PDF document text
    • http://pisoje.daniellereneewallace.com/uploads/1/3/1/8/131872225/bc97b.pdfIn PDF document text
    • http://xidulu.kk-blc.com/uploads/1/3/0/7/130738720/6240887.pdfIn PDF document text
    • http://files.americanwellnesssolutions.com/uploads/1/3/1/3/131382346/fasibas-zubigew-soxazefawad.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/1/0431/5008/2202/files/85167680282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/1096049657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/37415074859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1121/0398/files/jobutuwojixevewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0138/6920/files/rerebozufanujoxukaluza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/rijirumifigubikawemawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/44127107832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/witch_doctor_leveling_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5269/3669/files/67784454406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/sexupeluvaruvod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/english_to_spanish_translator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9493/1624/files/22378880548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/4562364199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/84134067778.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000746c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746C 5644 bytes
SHA-256: 2cbbc2984d6281e6f6f7b7ce969866913056cb729ea8b8a5b3dd659821bc6976
font_01_sfnt_off00008796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8796 14984 bytes
SHA-256: 1d2980c27cbaaeaf953d6a61126eeee1f3126f7e6b0a362f4bbf71336fb8ff0a