Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0c0346e568615e…

MALICIOUS

PDF

42.3 KB Created: 2020-08-11 07:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d3a9031a8593115820c0ebda03892f0 SHA-1: e5bca617d22307c2bb3847ced1ec3dd6996eb377 SHA-256: 4a0c0346e568615e49a296bc5c42df957cc9190e5960f115211882394d39b59f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.cc. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO poisoning. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to malicious sites through a deceptive link farm.

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=analyzing+financial+statements+8th+edition+pdf In PDF document text
    • http://zivep.boekinbinding.nl/uploads/1/3/1/6/131637881/xavibiwatimexuf.pdfIn PDF document text
    • http://files.andreajane.ca/uploads/1/3/1/4/131437249/7839406.pdfIn PDF document text
    • http://files.kapanshipman.com/uploads/1/3/0/7/130740258/ee7f97.pdfIn PDF document text
    • http://files.annalisavivona.com/uploads/1/3/2/3/132302923/3e16c6c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/budgeting_and_budgetary_control_in_manufacturing_companies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38743570217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0088/9507/files/1482342332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1296/files/60232289420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/polaris_snowmobile_service_manual_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5448/7969/files/vagetilizabawizug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1271/6701/files/gedotojaraxugom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/76642817097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2866/7798/files/robinhood_automated_trading.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/63665922564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/92844556106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/53560600128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1458/5509/files/61644448132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6315/6641/files/dafukofelesa.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
🗂 Part of campaign: annalisavivona.com 3 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A9 5596 bytes
SHA-256: 24fa4feb53765da7569db2497919afa62f356acb0cb0dd275cef8c1d2f882001
font_01_sfnt_off00006a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A94 10296 bytes
SHA-256: 44bc917d3daffac9766ee1807af758170c51c15886ed069feefdce0b06d7963f
font_02_sfnt_off00008da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA8 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34