Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fa895f2b8981eef…

MALICIOUS

PDF

46.8 KB Created: 2020-08-10 14:03:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b17bfc2e56661a8abf2f5ddab27c713d SHA-1: b3e0292b34862570f425ebc5cc051ad1a67fda98 SHA-256: 2fa895f2b8981eef4e1977606da10758492b44dcd53eb9bbb79be79aef893815
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one pointing to a known malicious redirector. The document body is heavily obfuscated and appears to be junk data, but the presence of numerous external links suggests a link farm or redirection tactic. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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=carrier+floor+standing+air+conditioner+pdf In PDF document text
    • http://files.blackbeltacademyfortpayne.com/uploads/1/3/2/3/132303269/5915198.pdfIn PDF document text
    • http://files.complete-instructor-training.co.uk/uploads/1/3/1/0/131070845/6512419.pdfIn PDF document text
    • http://files.gitchgear.com/uploads/1/3/1/3/131379591/1a0ba6a6.pdfIn PDF document text
    • http://files.dlplastictech.com/uploads/1/3/0/8/130873804/2834c62.pdfIn PDF document text
    • http://files.islaviolinecolodge.com/uploads/1/3/0/7/130775940/fejuxip.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/1/0431/3006/0955/files/78971876408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7467/3057/files/poraxedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/kajowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/69310682277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3022/3775/files/bavubijojixikuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8660/1635/files/62840722136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4892/files/bhagavad_gita_quotes_kannada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/71844558738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0677/0843/files/botisasifujimiwuguvobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xibazukikamemawamiwemin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0412/3557/files/cluster_web_graphic_organizer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8738/1155/files/81940017021.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_off0000790f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790F 5228 bytes
SHA-256: a98c566db8c71c48fda5c7b4f0f9b2d4439625b00038c08a8586e0447de3f31c
font_01_sfnt_off00008ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE7 10112 bytes
SHA-256: 9181d390fb14cbab096d9bccb326fd90b37689df085056fd862203df042363d7

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