Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e31a9821302a8d7…

MALICIOUS

PDF

41.0 KB Created: 2020-08-06 02:14:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3346d74082351d3265d84625b7d4f084 SHA-1: 43f582aac4edfc38ece3dce205c3dcd0ba8fb0e0 SHA-256: 8e31a9821302a8d7477c8bbf92b7e286253e82f0ad0225315148749c0a6889a8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or redirection attempt. The document body, though heavily obfuscated, contains the text 'Zimbabwe national anthem lyrics pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. 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=zimbabwe+national+anthem+lyrics+pdf In PDF document text
    • http://files.dngdecor.com/uploads/1/3/0/7/130776101/febuwaxenim-dugubuk-fugepunizotojip-sufewif.pdfIn PDF document text
    • http://files.acgh.org/uploads/1/3/1/4/131454549/8118935.pdfIn PDF document text
    • http://namal.uglypixelicious.com/uploads/1/3/1/3/131398091/babobivewal.pdfIn PDF document text
    • http://files.msmaguire-mls.com/uploads/1/3/0/8/130874429/jemegixapu-robonabosogip-fisowuzezef-ditujakesidi.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/1/0430/3483/7149/files/2633910154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/zujaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/libutufisolefod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/91454975671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/meduretetulagemoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2534/0328/files/mozuduvifetikapuvipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/lewajavirevurimovozubigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/79546208790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/51886183104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42632515291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7899/9446/files/9720610270.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_off000060b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B4 5684 bytes
SHA-256: 2fa575e07e384f4f01b303bd71d313fffd834ab473b4eba1d758b4f34ff6bf67
font_01_sfnt_off000073f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F6 10472 bytes
SHA-256: 88338eb4610a677e77e8e22c1280f13fa84a5922074bddde77259d1a7ecded08

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