Malicious PDF — malware analysis report

Static analysis result for SHA-256 2155da6d33cd8b95…

MALICIOUS

PDF

56.3 KB Created: 2020-08-19 15:21:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1f4c6eb3a6985a44b2c5da54d950f2d SHA-1: 8d453b1a7b9c776567c04c2e447f4c726f3fe85a SHA-256: 2155da6d33cd8b95c407d89dcfa4f652495c9f9315be1779642b4636d96fda3d
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body and heuristics indicate a lure for an advance-fee scam, likely aiming to trick the user into clicking the malicious link to claim a prize or parcel. The presence of numerous links, including a link farm, suggests an attempt to distribute malicious content or phish for information.

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=masked+singer+season+2+episode+3+performance In PDF document text
    • http://wuwus.luciademarcoillustrazioni.com/uploads/1/3/0/7/130775386/rudelesomuwama.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/1/0431/2409/7175/files/53467087852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/74414091464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5473/4235/files/67354084115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/roxononufanasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7330/0632/files/2nd_grade_phonics_assessment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/bokedezozogaweg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/36845913826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/kebusumagofizotutipoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/5096/3868/files/12090601233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1180/9190/files/96937858220.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

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_off000084e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E1 5808 bytes
SHA-256: ed06c515c1cc22dfb833b9a59146f451bc1b42c22f09943f98ba741171fd87b8
font_01_sfnt_off0000989d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x989D 11480 bytes
SHA-256: 4ace28cbb3c3ee14c2e9e9b7f9315f21e0d160143dc392fb90d21c77ab224252
font_02_sfnt_off0000bec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC9 16092 bytes
SHA-256: a8b3175009038fd0b36d272851454f9fd5e73b9a70874fb4018b32218f75eaa7

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