Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b905f61dd447b5d…

MALICIOUS

PDF

74.3 KB Created: 2020-08-11 19:40:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f3f26ba3421d1f5d752278ed64bbac8 SHA-1: f8a50c81f21f505579eb9e05e3b3adb91b17553c SHA-256: 8b905f61dd447b5d64ee7a0cb833de2bb3f4e8c28d2916bc69d311bcd31d745b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, including a critical redirector link to traff.com, suggesting a lure to malicious content. The document body, though heavily obfuscated, contains references to 'aro orientation book pdf' and embedded URLs, reinforcing the phishing pretext. No scripts were extracted, but the PDF structure itself is used to host a link farm designed to redirect users to potentially harmful sites.

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/pify?keyword=aro+orientation+book+pdf In PDF document text
    • http://files.ffol.org/uploads/1/3/2/6/132681758/d5392.pdfIn PDF document text
    • http://dulijix.sunbeamfamilyyoga.com/uploads/1/3/1/8/131871721/fagexudoduwaxegige.pdfIn PDF document text
    • http://files.thebonobodiaries.com/uploads/1/3/1/4/131406286/sukewuf.pdfIn PDF document text
    • http://files.lovegrowbuild.com/uploads/1/3/0/7/130739674/2bef3.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/1/0431/0607/4780/files/xewebewofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaxesajikibulunetegidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/15198250596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/zovesebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/27739624365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/devirupomup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8755/9833/files/calorific_value_of_different_fuels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/74444898244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/joguxesexakigani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/cpt_2017_professional_edition_free_download.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_off0000d28d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28D 4804 bytes
SHA-256: 17da372934fb5bf8f27890dfe03c636c411d6e0589f8af65aed1c78277b5f8fd
font_01_sfnt_off0000e2e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E8 13444 bytes
SHA-256: 6a3ac8562b0a29d5433410a04db9edd6884b27fb1e1d6e19fe3be058d9fb3a51
font_02_sfnt_off00010e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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