Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a96f944948c28c6…

MALICIOUS

PDF

40.7 KB Created: 2020-08-18 14:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e480b5b7b555d5d811ac3f4859586c2 SHA-1: 14cd337775e01908dbee08c076e8180386a688a2 SHA-256: 6a96f944948c28c64bb420959232df8e5ba8003932311b6927174ce0262b942c
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector URL, which is a common tactic for distributing malware or phishing pages. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms a malicious intent to direct users to harmful content. The document body's mention of "Black Friday full movie" serves as a lure to entice clicks on these malicious links.

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.com/pify?keyword=black+friday+full+movie++filmywap
    • http://fomabati.classoraclemedia.com/uploads/1/3/1/3/131383483/6528593.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/hennessy_patterson_computer_architecture_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/sanoxuxugobozazaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/xabuzowojata.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/scheduled_caste_list_in_up.pdf
    • https://cdn.shopify.com/s/files/1/0448/4582/6210/files/zafosu.pdf
    • https://cdn.shopify.com/s/files/1/0450/2428/0726/files/velez_electrocardiograma_descargar_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/3016/files/capitulo_2a_actividad_12_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/5048/3368/files/56716270456.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/dizipofewanemi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/latufegoxoges.pdf
    • https://cdn.shopify.com/s/files/1/0429/7539/5993/files/81078840348.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_off00005ce2.bin
240b0e144ea0b6d5094308f5d8a368109351b01b81db687e49ab66cef490c958
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE2 5492 bytes
font_01_sfnt_off00006f93.bin
7752531abf7bd14f0a0eb98556716c3034e4502fe81cde7e714b1dfd49d0f407
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F93 11456 bytes