Malicious PDF — malware analysis report

Static analysis result for SHA-256 79e085963a4cd5fa…

MALICIOUS

PDF

39.6 KB Created: 2020-08-21 08:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 043a44bbf7d016bd5815b717cc6256c3 SHA-1: 7f9142eba65fee559e4e00051fb766f7cb474ee5 SHA-256: 79e085963a4cd5fac658c50ae990bcf59d652189d49823e706aff10aeb43530d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.cc) identified as malicious. The document body, though heavily obfuscated, also contains this malicious URL and a URL pointing to a Shopify-hosted PDF, suggesting a link farm or SEO manipulation tactic to drive traffic. The ML classifier also strongly indicated maliciousness.

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=correct+punctuation+sentences+worksheet In PDF document text
    • http://files.hillviewchristian.org/uploads/1/3/2/6/132682210/xofovagez_vadeluboxovo_modimet.pdfIn PDF document text
    • http://files.pkapresents.com/uploads/1/3/2/3/132302919/8370776.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/1/0435/2901/1359/files/adobe_reader_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/19713689982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5561/2058/files/apdcl_recruitment_2020_assam_advertisement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2995/files/98637035370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9685/1103/files/xivojijisabefitamelumax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/derivative_calculator_using_formal_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5283/3695/files/54922591642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0401/0389/files/widutaxokobijofunaguwe.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD9 5048 bytes
SHA-256: fc6fb821540c92163bf23fba2fec009ae785435497f61c419bf78c1af37fef91
font_01_sfnt_off00006f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0D 10288 bytes
SHA-256: c74183ad47c4e2aeebfc3c62eb0c5e09bc0a578d1bb30de98dec6f8e14444fa3

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