Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f00669dfe6aa2b…

MALICIOUS

PDF

58.2 KB Created: 2020-08-20 23:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e059dff997be6c7a0f6e3c4c23d4a917 SHA-1: 407edcdf7016c6b5e267b37efbd54c3177c4d844 SHA-256: 07f00669dfe6aa2b41d2f056b6ffda4f0f49eed3fb16545a3c48d15f391fb84f
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains a URL that appears to be the same redirector. This suggests the document's primary purpose is to redirect users to malicious content, likely a phishing or malware distribution site.

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/pify?keyword=initiative+referendum+and+recall+worksheet+answers
    • http://files.christianmeditationrookies.org/uploads/1/3/1/8/131856352/128d2fbf2.pdf
    • http://files.onandofftheroadcreativeimages.com/uploads/1/3/1/6/131606046/72f838353.pdf
    • http://gowid.generationrestaurantsupply.com/uploads/1/3/1/4/131483281/baliloxujax.pdf
    • http://files.marcaaronsenoner.com/uploads/1/3/1/8/131856186/gipibibogafivub_buzadisakorafof_todekototopaju.pdf
    • http://mebinuxo.thewarinthepacificthurfilm.com/uploads/1/3/1/3/131379808/4550112.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/gabuninumosagaleni.pdf
    • https://cdn.shopify.com/s/files/1/0434/1121/0398/files/55763087935.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdf
    • https://cdn.shopify.com/s/files/1/0430/9254/1589/files/phonics_sound_a_to_z_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1786/files/bartholinitis_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0439/8625/6030/files/anthony_borgia_books.pdf
    • https://cdn.shopify.com/s/files/1/0429/7519/9391/files/75535227105.pdf
    • https://cdn.shopify.com/s/files/1/0429/7093/9541/files/mowilaneg.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/nikajuwopapuvefeni.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xakikalimakimoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/jidovilavalokib.pdf
    • https://cdn.shopify.com/s/files/1/0435/7377/2447/files/answer_sheet_template_1_50.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000984e.bin
cd672caa0983cdef1e144fae1a12b68aba706ec5103c1eba537f653e538e003b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x984E 5296 bytes
font_01_sfnt_off0000aa2f.bin
d143c4d14edefbe5e3333dcb1e678090aa5ba0412eea6faf5962255ad34b6a48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA2F 10144 bytes
font_02_sfnt_off0000ccda.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCDA 4324 bytes

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