Malicious PDF — malware analysis report

Static analysis result for SHA-256 948c83d59cf2fd6d…

MALICIOUS

PDF

68.6 KB Created: 2020-08-28 07:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95b09e9ca4d172b88c31e1556f44a100 SHA-1: 4b37e9b509de099b843847bb101e34cd5b1c7813 SHA-256: 948c83d59cf2fd6d97bf12dc408b969371db9d39bd89e9ce1d62ef78d546cd61
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Brian pumper movies' and a URL that aligns with the malicious redirector. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. The primary malicious IOC is the redirector URL.

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=brian+pumper+movies In PDF document text
    • http://tivojaze.thriftbox.org/uploads/1/3/1/0/131070054/551b09388cccc9.pdfIn PDF document text
    • http://files.mail.thespiritbutterfly.com/uploads/1/3/0/8/130873927/nusiba-sefibat-zelosolegejuva.pdfIn PDF document text
    • http://wadode.sheenamcgrandles.com/uploads/1/3/0/7/130775085/c3c562991fe.pdfIn PDF document text
    • http://femex.trailboundberners.com/uploads/1/3/0/8/130874422/7670059.pdfIn PDF document text
    • http://files.patchesfamilycreamery.com/uploads/1/3/0/8/130874189/2630716.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/1/0444/3645/5591/files/yamaha_yst-_sw215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/bitcoin_sv_address_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0862/files/64034872689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3384/6175/files/91354416993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8957/5588/files/mepagalukibupive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/86270834037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/dotatuweri.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 7

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_off0000c3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B0 5044 bytes
SHA-256: 88d7cb790e5abad6fe018a4c6c50f9d555d7dce240a0af5d97b9efecc2dfee23
font_01_sfnt_off0000d4bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BC 16124 bytes
SHA-256: 1fd64698652735d730d5c1abdf27ec1625da29c93fb5445599d03d722514d764

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