Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b0a7e773e046f7…

MALICIOUS

PDF

54.9 KB Created: 2020-08-28 06:14:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4494b3ef28a5fa45880ef0dc3638e4e SHA-1: 6c4b787361f5f7f784ba71c639b7f3b1e7d13aaa SHA-256: 64b0a7e773e046f7ce20f691e27e0cf0ec430e7e957e7a90b18db4ea2addb243
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 directing users to 'https://ttraff.cc/pify?keyword=definitive+technology+procinema+600+reviews'. The document body also contains this URL and numerous other links to PDF files hosted on Shopify and other domains, suggesting a link farm or SEO poisoning tactic. While no scripts were extracted, the presence of embedded URLs and the redirector link strongly indicate an attempt to lead the user to malicious content, likely a phishing page or further malware download.

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=definitive+technology+procinema+600+reviews
    • http://files.bioscienceaustralia.com/uploads/1/3/1/8/131871705/7770791.pdf
    • http://files.anmarcos.com/uploads/1/3/0/9/130969603/birineb_xexopid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/7855583773.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/ravatidepamovi.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5650/files/kopirenazopozar.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/74399164725.pdf
    • https://cdn.shopify.com/s/files/1/0433/9128/7461/files/10_benefits_of_reading.pdf
    • https://cdn.shopify.com/s/files/1/0429/5180/3039/files/ergonomic_mechanical_keyboard.pdf
    • https://cdn.shopify.com/s/files/1/0429/5753/7439/files/sutiwegu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7175/files/53263597490.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/93708027961.pdf
    • https://cdn.shopify.com/s/files/1/0433/8355/4206/files/problemas_razonados_para_segundo_de.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/68374934931.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_off00008716.bin
1f9b20340b1a31ed751de5d752315c90c9f631ee7f222464f29741306d47e126		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8716 5764 bytes
font_01_sfnt_off00009aa8.bin
b79c8f8f3c5301928e37ad5ec9017487daf67791fb9a14c283527bd1a7d4acc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA8 10556 bytes
font_02_sfnt_off0000bea8.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA8 4324 bytes

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