Malicious PDF — malware analysis report

Static analysis result for SHA-256 a59693baab4a4b67…

MALICIOUS

PDF

52.5 KB Created: 2020-07-31 11:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0a567a1232067d465f158056308db68 SHA-1: c3fca65438ce7e5ba073658003aa1e03489a9bed SHA-256: a59693baab4a4b67db34fd33a3a60d3de4cca53a7cda95112d93ab7a8154f472
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links designed to appear as a link farm for free PDF downloads, but they redirect to malicious infrastructure. The primary redirector URL is ttraff.cc, which is flagged as malicious. This suggests a phishing or scam attempt 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.cc/pify?keyword=encyclopedia+of+computer+science+4th+edition+pdf In PDF document text
    • http://files.edocig.com/uploads/1/3/1/8/131871462/6762709.pdfIn PDF document text
    • http://files.herbesque.com/uploads/1/3/0/7/130775108/juzas_tufelukolanir.pdfIn PDF document text
    • http://files.thedivadogs.com/uploads/1/3/1/4/131438461/vapivafukenekakabi.pdfIn PDF document text
    • http://files.besthairextensionswilmington.com/uploads/1/3/1/4/131438245/nojagaluso_muduruja_fasotilifin_pitojuvuto.pdfIn PDF document text
    • http://files.darrellneufeld.com/uploads/1/3/0/7/130776769/suvumodojidof.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/1/0437/7310/0184/files/44454568843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7274/1791/files/36462092820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7086/5060/files/74994724753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/xekororajutuvefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/90448047535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/feduzejud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/gimubasuregitelatak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/48070436294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/zifugadat.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off000076b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B3 5424 bytes
SHA-256: 6f08361d70bda626afd67aafdb00383f81c5c8b4e29612931660cc7e38bf12db
font_01_sfnt_off000088fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88FC 11740 bytes
SHA-256: 2cc565888649cd2effc853e80b0e8fb1ca8927e4154e87f7d54350610bbde090
font_02_sfnt_off0000aef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEF6 16112 bytes
SHA-256: da133098c8ec00180ce5fe37c74b807b143adc5860869a2f7b6211e455203b10

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