Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f75a1191c56206…

MALICIOUS

PDF

42.5 KB Created: 2020-08-09 07:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4190ef1f080a79da3226c5d033a14dc1 SHA-1: 80c9d406c1906f9867d6decb213483a95d9e64fd SHA-256: 07f75a1191c562065626bd394d8e0ff52c4bfb1f16d9f947242db3a75bed4a5a
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 a link farm designed to redirect users to malicious sites. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. The document body, though heavily obfuscated, contains references to the malicious URL and appears to be a lure for users searching for specific PDF content.

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=brandt+daroff+exercises+for+bppv+pdf
    • http://files.mettertigercheer.com/uploads/1/3/1/1/131164473/xoduvur-bezilakejo-zudike-tutiba.pdf
    • http://jinados.musicaextrema.nl/uploads/1/3/1/3/131384281/4509081.pdf
    • http://files.hwolfenson.com/uploads/1/3/1/4/131407435/48d06fb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/4219/4083/files/fadamopafejofafadumu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1501/8392/files/torawomudasolasudedewej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/43703131712.pdf
    • https://cdn.shopify.com/s/files/1/0430/0963/8553/files/orao_so_miguel_arcanjo_21_dias.pdf
    • https://cdn.shopify.com/s/files/1/0431/1996/8417/files/rinatetitegifatibevos.pdf
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/white_collar_season_6_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7094/files/13762928072.pdf
    • https://cdn.shopify.com/s/files/1/0432/5372/7394/files/nano_sim_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/5056/4773/files/dnd_5e_player_s_handbook_color.pdf
    • https://cdn.shopify.com/s/files/1/0432/5608/6696/files/tifizugo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/sap_bpc_training.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_off00006750.bin
5cc759f7adaea50097282f636ce40e8f6426531f1471336a760dcec6697c7c70
pdf-font-stream PDF embedded font (sfnt) at offset 0x6750 5436 bytes
font_01_sfnt_off000079e5.bin
6d75416693d2272ab4cdd41ea82213dbda87653acc14328ec75000f3c70d7d46
pdf-font-stream PDF embedded font (sfnt) at offset 0x79E5 10376 bytes