Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a91f5e77eec2421…

MALICIOUS

PDF

55.5 KB Created: 2020-08-12 09:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94707486bd582b5b0e6f676bf131c957 SHA-1: dc523c616e81d7aa7dabed2d7065f47953a2ed1e SHA-256: 0a91f5e77eec24218c63940604ea0f50af21ec3fc6e1c902653bf1dffb15207d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though obfuscated, also contains the same redirector URL, suggesting an attempt to trick users into clicking through to a malicious download. 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.com/wb?keyword=mother%20sauces%20and%20derivatives%20pdf%20download In PDF document text
    • http://jebotewad.jacquelynspeare.com/uploads/1/3/0/8/130874601/785866675bb309b.pdfIn PDF document text
    • http://pinox.dscampers.co.uk/uploads/1/3/2/7/132712315/wokisu.pdfIn PDF document text
    • http://files.collinsvillecrimsoncadets.com/uploads/1/3/0/8/130814043/womozazidiwulip.pdfIn PDF document text
    • http://files.windersonscreations.com/uploads/1/3/1/4/131406082/5184639.pdfIn PDF document text
    • http://files.lappiesinoz.com/uploads/1/3/0/7/130776745/movedevigak.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/1/0438/0976/7584/files/gta_4_1._0._7._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0625/2440/files/36738571076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7784/3609/files/breast_cancer_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/41180104188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5491/4981/files/nifobesiminazaxafuluwipel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1097/2053/files/bozanstvena_komedija_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9471/1203/files/28509609994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5407/5799/files/system_analysis_and_design_notes_for_bca_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0096/9896/files/85606546947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4073/5381/files/leboxorewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9154/9590/files/eolian_harp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6658/9335/files/gastroenteritis_dieta.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 8

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_off00009a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A59 5400 bytes
SHA-256: a1265071746b47b53ff90ea3fc8a7fb055e28d8627457d675cf202b19a2be7c5
font_01_sfnt_off0000acd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACD1 10364 bytes
SHA-256: 468689323f657c2663518935b6de8bfb274f1cc2631bd3e79f796248ce6556e8

Open this report in the interactive analyzer, or submit your own file for analysis.