Malicious PDF — malware analysis report

Static analysis result for SHA-256 9da3b2fb14e0927c…

MALICIOUS

PDF

61.1 KB Created: 2020-08-17 10:51:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca355fa87f1213db0e0d7c19ffbf766c SHA-1: 06cded55a62fec72b3ecae685d953494f00522ab SHA-256: 9da3b2fb14e0927cb89257c3669214f0bae2517597a6367bd79786c9b6008b77
254 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body also contains text that appears to be a lure for a password-protected archive, and a callback phone number lure. These elements suggest a phishing or scam campaign designed to trick the user into interacting with malicious links or providing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/pify?keyword=blackberry+8900+os+6++link In PDF document text
    • http://files.lvapparel.net/uploads/1/3/0/7/130738614/6039566.pdfIn PDF document text
    • http://piwuxefip.uncdf-a2f-kigoma.com/uploads/1/3/0/7/130776225/881982.pdfIn PDF document text
    • http://sobokasob.dosterleadershipconference.com/uploads/1/3/1/1/131164250/giwotu.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/1/0432/1837/0728/files/48590151753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7539/files/8047088669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6264/7191/files/binkw32._dll_for_sleeping_dogs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/carson_dellosa_reading_comprehension_grade_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1442/2677/files/fumutajadofokekonir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6538/4866/files/49232836543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/87153488900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1637/1867/files/dapujiliduwemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/faxagiwizusikemekovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0692/4712/files/31562071677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/12177161450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/91036361357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9512/1319/files/lajaso.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_off0000aba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA0 5796 bytes
SHA-256: 67ebcc3b7f9a41e6f10a5824e759c09b47f1f86ffb0686d079e38caacc3d1baa
font_01_sfnt_off0000bf65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF65 11448 bytes
SHA-256: 93acf7283f1d7f6342bb41bff8813f8cd272af39821f6197864e7d274a4c68ed