Malicious PDF — malware analysis report

Static analysis result for SHA-256 4879d5d6a16b4b5e…

MALICIOUS

PDF

43.2 KB Created: 2020-08-12 04:09:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b653f4a8a5e439f99920daca36c722f4 SHA-1: 2fe5275cf7a1274c0a65f77a76ca636d0aee073f SHA-256: 4879d5d6a16b4b5eb3bc03575dab7a90cec6a7b08e7a6368526bd6fc2768fe96
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with a primary malicious redirector URL identified as https://ttraff.cc/pify?keyword=how+to+cite+a+pdf+article+in+chicago. This URL is likely used to redirect the user to a malicious site. The document body, though partially corrupted, contains the same malicious URL, reinforcing the intent to lure the user. The ML classifier strongly supports the malicious nature of this PDF.

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=how+to+cite+a+pdf+article+in+chicago In PDF document text
    • http://files.mrwildinghomeroom.com/uploads/1/3/1/4/131406537/gekan.pdfIn PDF document text
    • http://janoti.fullspectrumbirthdoula.com/uploads/1/3/2/7/132740435/288aad805fa2.pdfIn PDF document text
    • http://files.brandtheinterpreter.com/uploads/1/3/1/4/131407135/147adc80a80b616.pdfIn PDF document text
    • http://dular.southmainbbq.com/uploads/1/3/1/4/131482976/zamemebudetaxu_wobuvoduvo_jakonu_fuxetofibosanos.pdfIn PDF document text
    • http://files.wellbeinglifeus.com/uploads/1/3/0/8/130873877/0941072a0.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/1/0434/5259/6374/files/essential_organic_chemistry_bruice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/bootstrap_image_responsive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/xunafisisatotumovemufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/67615865747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/kapukulelalitovavomij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7578/7169/files/93508277140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1257/9747/files/33656847587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/5363974817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/lepagipaduvoxepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30698029692.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9C 5080 bytes
SHA-256: 10e69a4448cedf69456837beae0ec3472910d46a484c96bafcd12600d5b7f909
font_01_sfnt_off00006fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDF 9876 bytes
SHA-256: 673c8503004a001cfc911d4d6b3d4d4610c3a045fe77b912c9c6cd7b21e22d67
font_02_sfnt_off000091b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B1 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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