Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5c5fe0471c938dd…

MALICIOUS

PDF

61.3 KB Created: 2020-07-29 09:53:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1c2d6a5b39c4aea22981bed81dcd9cf SHA-1: 6ef493114be811843fa9a8a3048cd54b9d23bcc5 SHA-256: c5c5fe0471c938dd633092a2c666324e9fc174c50886f3e4dadfa19b321f03e7
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain keywords related to media, suggesting a lure. The presence of numerous PDF links, many hosted on cdn.shopify.com, indicates a link farm strategy to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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=bhojpuri+film+gadar+2+video++3gp In PDF document text
    • http://files.artyfartycanmore.com/uploads/1/3/1/4/131438137/dawexuxi.pdfIn PDF document text
    • http://files.jlgpublishing.co.uk/uploads/1/3/2/6/132695438/4088728.pdfIn PDF document text
    • http://files.anelelundborg.com/uploads/1/3/0/8/130814132/zobojuvari-nogubebasibipu-buxuxafit.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/1/0433/5697/9351/files/kexobezos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6521/1035/files/93389922323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/84014659881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/55283319791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3301/0081/files/retok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89573664631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/54107140658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5549/5833/files/bikewupajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/96436085759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4610/0377/files/pusare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/42062689603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/zataxowiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/59607062369.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a8a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8A9 5456 bytes
SHA-256: add0e255eac1ed2de6ef27fefad1b8f57e6b4e5c7d4e9a1ebff154a3601b5a63
font_01_sfnt_off0000bb4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB4C 14368 bytes
SHA-256: b49e6bc9d360ccc1d072e5c5da6aefa83586e2115199b35d25ee54275285a3a9

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