Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd545915abfa6b24…

MALICIOUS

PDF

44.8 KB Created: 2020-07-30 05:35:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a997baa907367763cfb77eb05f545dfc SHA-1: a0f9af7d547b48170d0743643c174f849f8b95c6 SHA-256: cd545915abfa6b24dfb189a888e0cfca2601c8e0700c175fdea68c0e9e194af6
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'choice of superannuation fund standard choice form pdf', suggesting a lure. The presence of a callback phishing lure heuristic further supports a social engineering attack. The primary malicious IOC is the redirector URL.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.com/pify?keyword=choice+of+superannuation+fund+standard+choice+form+pdf In PDF document text
    • http://files.johnjosephhayes.com/uploads/1/3/1/8/131871416/2477916.pdfIn PDF document text
    • http://files.manxfestivalchorus.com/uploads/1/3/1/4/131438177/6181704.pdfIn PDF document text
    • http://files.ripplevfx.com/uploads/1/3/2/8/132814958/lizosifom.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/1/0434/0200/2584/files/9295443270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/39415409064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/zupabilaxipuzixudogibudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/75492749166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/gabezasibipiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7441/0901/files/22108892235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6656/2462/files/zevodizutos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1348/0354/files/11898930125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8098/8325/files/tinop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5187/4466/files/legoligolademinerewaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/42383434875.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_off0000715e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715E 5268 bytes
SHA-256: 82d70cb1a90c2b59148b596f9cf050fd802c4974ba01fe009c33fd3a64375024
font_01_sfnt_off00008316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8316 10208 bytes
SHA-256: eab8206ef4c5d34f9f9b8f142b369fdbbfae9820d659e926b87194180cc6e00e

Open this report in the interactive analyzer, or submit your own file for analysis.