Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c604fab2449b5d…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 16:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e603642536ecb7b38f2443e16a2be41b SHA-1: ced07d0d225053fca4a96ddd5a936c5d9be266b2 SHA-256: 02c604fab2449b5d430b7a8bfbda644dbb1042231926b38f0a36f53d810e3b82
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body and heuristics indicate a lure for a password-protected archive, a common tactic in phishing and scam operations. The presence of numerous external PDF links suggests a link farm or SEO manipulation to increase visibility. No scripts were extracted, but the overall structure and malicious URL indicate a phishing attempt.

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.
  • 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=extraccion+y+almacenamiento+de+leche+materna+pdf
    • http://files.smashcakesetc.com/uploads/1/3/2/7/132740553/rofisazozizu_nafinituzebol.pdf
    • http://files.westsideyouthministry.com/uploads/1/3/1/6/131637169/9a6d19c6a2d6.pdf
    • http://fadozi.iheartbagel.com/uploads/1/3/0/8/130874359/komojelixabit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9982/4036/files/tratamento_da_asma_bronquica.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/1994793729.pdf
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/76661561561.pdf
    • https://cdn.shopify.com/s/files/1/0428/4222/6854/files/43974933630.pdf
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/gosebidubimisurekodo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/terrible_things_allegory.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/tratamiento_del_nervio_ciatico_inflamado.pdf
    • https://cdn.shopify.com/s/files/1/0429/0890/9734/files/piguwovamivuzajiludu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0905/6666/files/47126860042.pdf
    • https://cdn.shopify.com/s/files/1/0437/6520/3093/files/act_kagerou_overlay.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/7582042268.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_off00006212.bin
43bbace54a11819599deebd06c272a7549562bf56498643b3f399a85b13315f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6212 5344 bytes
font_01_sfnt_off00007416.bin
022eeda2dab1d2ea0888fc9b475dfb1ce2f50babaec2439b75c5338d3239574d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7416 11092 bytes

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