Malicious PDF — malware analysis report

Static analysis result for SHA-256 60132c1d3f5b5d73…

MALICIOUS

PDF

49.8 KB Created: 2020-07-22 20:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e58f124ac2d9a4eeb0a10e74317f992e SHA-1: 1193d1b1cd71fec17adcf2f2c981c1fa44384790 SHA-256: 60132c1d3f5b5d739b4d44bbaf4e0a54a098b12074dcf67ae8531a3c2b84c232
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure, indicating a phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded links are highly suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/wb?keyword=business%20plan%20example%20pdf%20francais
    • http://files.tiltedhaggissoap.com/uploads/1/3/1/1/131163853/6316354b4.pdf
    • http://files.lucyhollidgedesign.com/uploads/1/3/0/7/130775392/pumokuva_zavusiwenabado_lerunusewed.pdf
    • http://files.samalaghoshcreations.com/uploads/1/3/1/3/131380836/mebubarud.pdf
    • http://files.vivagreb.com/uploads/1/3/1/6/131637034/kimab-sugala.pdf
    • http://files.craftyjoe.com/uploads/1/3/2/7/132741181/80e89806a5104ae.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bopeberovejaxurid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wotedosepano.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/nozixexapovor.pdf
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/25905565577.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/nejobiramumepokavijiba.pdf
    • https://jomasolif.files.wordpress.com/2020/07/30818229096.pdf
    • https://mosutag880995420.files.wordpress.com/2020/07/45201595109.pdf
    • https://savevawat.files.wordpress.com/2020/07/xoretulujiliwusunesizeraz.pdf
    • https://gonaburezi.files.wordpress.com/2020/06/8280947881.pdf
    • https://beluxubaw.files.wordpress.com/2020/06/vuziduwovamosuxuja.pdf
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/90461660749.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdf
    • https://cdn.shopify.com/s/files/1/0433/4583/8232/files/73275885568.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fapodepemiretewuroraga.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/83674147978.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/89857465167.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89120683065.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081d7.bin
9a30295c4ae212dc4e8ccec2c040d01cbca223812cc5045e81ee07d16f79c0ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D7 5108 bytes
font_01_sfnt_off00009313.bin
911dd1dabb934123c3f647da4dddf8741b9bb641295c39cb027cd310bea86897		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9313 11792 bytes

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