Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a56c501f8c15d1a…

MALICIOUS

PDF

48.1 KB Created: 2020-08-23 17:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e90ac7799bc908df7c7d6737fff2b663 SHA-1: 1202d5efbc656a3b6553964715d8cf93c31501ec SHA-256: 2a56c501f8c15d1a08396676b4253a4472e377a6e09f2f6945af28dd869f414e
234 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The document body, though garbled, suggests a lure related to 'Plataforma Lattes curriculum update'. The presence of numerous embedded URLs, many pointing to Shopify and other file-hosting services, suggests an attempt to distribute malicious content or redirect users to phishing sites. The ML classifier strongly flagged this PDF as malicious.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=plataforma+lattes+atualiza%25C3%25A7%25C3%25A3o+de+curr%25C3%25ADculo In PDF document text
    • http://fawojilap.donnellpa.com/uploads/1/3/2/7/132712413/kajepoluresupag.pdfIn PDF document text
    • http://files.methodistchurchguyana.org/uploads/1/3/1/6/131606533/1526309.pdfIn PDF document text
    • http://dolugibu.jassiewassy.com/uploads/1/3/0/7/130738546/kotomeva_lafagitiniriz_jumusegijena.pdfIn PDF document text
    • http://files.257bennettstreet.com/uploads/1/3/1/4/131483830/ziluxuwobi.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/1/0428/8764/3302/files/9960116693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/89008164548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/nitiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/sufetazaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/44871121818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6950/4662/files/pokemon_green_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/88534985535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5371/1513/files/82988932582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2779/8943/files/83074442739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.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 6

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_off0000796b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796B 5772 bytes
SHA-256: 156656b6009a8f72e1b0eba38e03843d1182c24fa28539fb603f792cefcba8c6
font_01_sfnt_off00008c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1B 12692 bytes
SHA-256: 41a056f79b0dbe975314acfc1c6ee5d3a1cad05a846890d887d8c1783bb02948

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