Malicious PDF — malware analysis report

Static analysis result for SHA-256 f33a72d7ce5f2fa8…

MALICIOUS

PDF

54.4 KB Created: 2020-07-31 16:54:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4fa444806adedc9d43d591231259dc5 SHA-1: 29cfd30f0d647bc388522d0e3496c6906b2cdfd4 SHA-256: f33a72d7ce5f2fa8221d2ba458fe74f1c0f4a7738407494e931f628620755d92
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits a PDF link farm, with numerous external links, one of which is a redirector to 'ttraff.com'. The document body, though heavily obfuscated, appears to contain the malicious URL. This suggests the primary goal is to redirect users to potentially harmful content.

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=red+concrete+minecraft In PDF document text
    • http://files.ejzimmerman.com/uploads/1/3/2/7/132740892/nizibigotiwuxemojeki.pdfIn PDF document text
    • http://files.ethymedia.com/uploads/1/3/1/4/131406321/sefadotax-xavivometere.pdfIn PDF document text
    • http://files.herbalaccents.net/uploads/1/3/1/3/131383467/b3370d06d.pdfIn PDF document text
    • http://files.gatetocommunicate.com/uploads/1/3/1/4/131409508/8276851.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/1/0431/9890/6528/files/54787790832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/60748002813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1804/4070/files/musipaxej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9231/1206/files/philips_led_light_price_list_2020_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0541/9418/files/mukazebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2702/8375/files/jopokusupisegaxupadifoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/61255654579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7294/5312/files/lipugelujisofiwabul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/83998813507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/wudazejirixaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1976/2840/files/jimumumevopuwat.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 5

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_off000098bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98BB 4964 bytes
SHA-256: 2c59d0db0078d4609ded819cfd347e33a8135430e96c2b59e40670a363aa3272
font_01_sfnt_off0000a98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA98C 10332 bytes
SHA-256: d6fefb266c718da9744b6ea1dbc58c3a9b5a96ffefa37233b55ee058674d71cd

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