Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa4a8b2b77597cc9…

MALICIOUS

PDF

43.8 KB Created: 2020-07-31 00:48:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e85afe7f2b6867ed9c20b67230957eb2 SHA-1: 70a5e15be8fdf0365257b0cd921408386cb9baab SHA-256: fa4a8b2b77597cc93b5096674d2ec2b39d585e8562bb7526b4ea424fa282ffc1
234 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1204.002 Malicious Link

The PDF contains a lure instructing the user to copy and paste content into a command-line interface, which is a common social engineering tactic to bypass security controls. It also embeds numerous links, including one to a known malicious redirector, suggesting an attempt to download further malicious content. The document body is heavily obfuscated, preventing a clear understanding of its direct content, but the heuristics strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=command+prompt+tips+and+tricks+pdf In PDF document text
    • http://files.garyscollision.com/uploads/1/3/2/6/132680813/6391298.pdfIn PDF document text
    • http://files.projectfine.org/uploads/1/3/1/8/131871477/lejazojaruxiji-sawifa-besururefizuwof-zurawari.pdfIn PDF document text
    • http://files.zandugandzic.com/uploads/1/3/1/3/131379183/3856426.pdfIn PDF document text
    • http://files.catherineodriscoll.com/uploads/1/3/1/4/131452887/6873501.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/1/0429/9590/8761/files/wofikobofisixuxam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7904/files/mefoxifodolume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7016/7966/files/mesifobulasupodik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6889/1040/files/99917376133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/fagigajima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/54602183829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/82204083937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/putova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/33180119276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/lufirijuvukevugidefiniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9197/files/tanozefi.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_off00006e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2A 5028 bytes
SHA-256: b4ec0bc4f57d0e9b4d1187b0284c20a64eaefe3011b09367fb67e131a441320e
font_01_sfnt_off00007f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1F 10320 bytes
SHA-256: d5832f148f4bc79bc650b0acd041af91e6165a903926e5cbeccf5c04e7c0322d

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