Malicious PDF — malware analysis report

Static analysis result for SHA-256 8907d719123dc729…

MALICIOUS

PDF

48.0 KB Created: 2020-08-17 02:06:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cffde341d3c0e95694f96dd176550664 SHA-1: d7ead7998bd590c3e0a2b6fe1e68bc0b9d3eddb9 SHA-256: 8907d719123dc729d4196ca809f0f97d2e70f0cc98b32a224bcec6283137d575
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service that ultimately leads to malicious infrastructure. The presence of a link farm and a redirector suggests an attempt to disguise the final malicious destination and potentially engage in SEO poisoning to lure victims. The ML classifier strongly indicates malicious intent.

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=hip+adductor+stretch+pdf In PDF document text
    • http://files.shearwondersboutique.com/uploads/1/3/2/6/132681479/jotaze-zujogutu-tejoriwe-najatoj.pdfIn PDF document text
    • http://files.albertcuypclinic.com/uploads/1/3/1/3/131383493/40ed542c19f.pdfIn PDF document text
    • http://files.heathernormansmith.com/uploads/1/3/0/7/130775245/8687857.pdfIn PDF document text
    • http://lidunuv.testirishracehorseowners.com/uploads/1/3/1/4/131406427/1368909.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/1/0430/3942/4669/files/23938581199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1563/4071/files/towaroveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7236/4437/files/31422592589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/10469209110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/makesojawafaxageriroba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6441/6663/files/fedaditalikazil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4998/3901/files/15875375776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9620/2652/files/dirufom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1574/8253/files/begf_101_question_paper_june_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/problem_solving_creative_thinking_and_decision_making.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/dexetigeraga.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 4

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_off00007222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7222 4948 bytes
SHA-256: a75d4de7f7f9dd6ff6aaf9bdd950862f5f59970d57ee92618825fed0bc0471f1
font_01_sfnt_off000082fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FD 9860 bytes
SHA-256: f3bc614b244712b41fd5470d4aae806d8e2f33c3e111a696b83bc4c2292503bc
font_02_sfnt_off0000a4b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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