Malicious PDF — malware analysis report

Static analysis result for SHA-256 5881e663b695f239…

MALICIOUS

PDF

42.2 KB Created: 2020-08-23 22:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad9b2c797373b70920d5d52f06dbb7a8 SHA-1: 5928b251f5d382e20e580e1486438a0d620216b4 SHA-256: 5881e663b695f2399670504eb019be3cedd3287b5299bec8a33126ac08debd0f
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a link to a PDF about sedatives, hypnotics, and anxiolytics. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on Shopify, likely to obscure the malicious destination. The ML_NYX_PDF_MALICIOUS score further supports the malicious classification. The primary IOC is the redirector URL, which is designed to lead users to harmful content.

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=sedatives+hypnotics+and+anxiolytics+pdf In PDF document text
    • http://files.seriousleisure.net/uploads/1/3/2/6/132695280/931eaeda1e7.pdfIn PDF document text
    • http://files.mayfieldwomensclubofwc.org/uploads/1/3/1/0/131071043/6e4b0f42a668.pdfIn PDF document text
    • http://rurogizam.travismurphygeo.com/uploads/1/3/1/4/131406893/3484454.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/1/0432/7846/7238/files/75690967976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/10937178593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/nogedijejiluf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8644/6746/files/35172754063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/62936786196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/91255316292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/25284312645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/35472119860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9038/5821/files/excel_download_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7193/0529/files/wazotawujufevezuwovajuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4586/1029/files/addy_nagar_new_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7794/9848/files/small_engines_troubleshooting.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_off000067c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C5 5480 bytes
SHA-256: 9330bafac79030a3c8fcdb8b6b28800c721774bacd141099ca37bfae8063468b
font_01_sfnt_off00007a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A72 9712 bytes
SHA-256: 557f8b6e521fad3acbc49bbca622c72a901b0e964bcfd01f672471478ce4d4a1

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