Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3438a168ee9033b…

MALICIOUS

PDF

39.2 KB Created: 2020-08-11 21:29:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b09984ea5c66b5078a8650210145f474 SHA-1: 86246d08b1e48e5ff468b6f4f74b1d11aa841900 SHA-256: f3438a168ee9033b9d1a3f5651034442f1a3de65080500b757c7fcf323652767
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to ttraff.com, suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains keywords related to 'Cyclone Idai Zimbabwe PDF' and the malicious URL, indicating a lure to trick users into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=cyclone%20idai%20zimbabwe%20pdf In PDF document text
    • http://files.onboardxpress.com/uploads/1/3/0/8/130814715/3b878830d.pdfIn PDF document text
    • http://files.yfeproductions.org/uploads/1/3/0/8/130815277/powelediw_xifikirewuvaro.pdfIn PDF document text
    • http://files.consciouscenter.nl/uploads/1/3/1/6/131606203/rozelejetazukixikab.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/1/0438/9866/7163/files/38104145105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/84461241233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/tyler1_draven_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9369/4366/files/qasida_burda_sharif_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1164/4324/files/apologia_de_socrates_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/lugibalepezogonubatogama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9911/2099/files/xuvotag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6272/6551/files/definition_of_human_migration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3103/6053/files/aristotle_poetics_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/44064718022.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 2

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_off00005a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A12 5316 bytes
SHA-256: ad9f880606045dd8e43739792c21a3e06a3b4f2d97445966af2d31196ab131c7
font_01_sfnt_off00006c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2E 10684 bytes
SHA-256: 5d50979d6f41254c8ebde0c5f22eed29f778df2c0d288c5a573c37820ec6af82

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