Malicious PDF — malware analysis report

Static analysis result for SHA-256 a067e591794be83c…

MALICIOUS

PDF

41.3 KB Created: 2020-08-24 13:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f56576e1d0d975fb5bc097e410075a6c SHA-1: 5042e600580c1122c97df28806a6955e6a3e7ae1 SHA-256: a067e591794be83c41ee68aca1f8961505c7ea0b91d2c766f9a58e46dfc90be9
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=hiv+and+breastfeeding+guidelines+uk. While many other links point to benign Shopify domains, the presence of the malicious redirector indicates a clear intent to lead the user to harmful content. The ML classifier strongly supports the malicious verdict.

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=hiv+and+breastfeeding+guidelines+uk In PDF document text
    • http://files.wintonweddingandeventhire.com/uploads/1/3/1/4/131455956/nuruwunevigevan-javegumosokalu.pdfIn PDF document text
    • http://gujad.shellifrew.com/uploads/1/3/0/7/130775045/namonukavo.pdfIn PDF document text
    • http://genej.queveri.com/uploads/1/3/0/7/130739227/rurexibugapade.pdfIn PDF document text
    • http://files.phoenixlefae.com/uploads/1/3/2/8/132814241/dojafi-voforigofatam-semixeb-muvubufuzafiz.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/1/0434/4827/1014/files/typhoid_fever_pathogenesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/articles_practice_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/shield_addressable_fire_alarm_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8667/4088/files/a105_material_specification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3524/5214/files/40719444159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0359/files/formato_certificado_medico_cdmx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8220/9698/files/pdf_biodata_format_for_marriage_for_boy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5738/0514/files/44614281084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/degree_2nd_year_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1493/8014/files/it_support_engineer_interview_questions.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_off0000649e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649E 5300 bytes
SHA-256: 8ea9979c1f1ab02fceeee44025b8f3d7d2f64d7b567d1a20a3c57436861694f8
font_01_sfnt_off000076a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A8 9976 bytes
SHA-256: 7cf98bf6209398eaf616607270fbd1e47525f969e861e4909e6551aec26cc9ab

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