Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e08f2c6867f363…

MALICIOUS

PDF

46.0 KB Created: 2020-08-23 09:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27e68e7d0eb1d7e5eab5d75028330f35 SHA-1: af737989a247d17742142b91f137b7851636611c SHA-256: 33e08f2c6867f36353c9e7ed8bf47015094d33c31a8dd3a447a91cf34f14f6d6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though obfuscated, contains text related to 'food additives' and a URL that matches the redirector. This suggests the file is designed to lead users to malicious sites, likely for phishing or malware distribution.

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=riesgos+de+los+aditivos+alimentarios+pdf
    • http://files.balancedintelligencegroup.net/uploads/1/3/1/0/131069789/8126840.pdf
    • http://files.bondosaka.com/uploads/1/3/2/6/132682342/5770822.pdf
    • http://benuveve.andreanelson.studio/uploads/1/3/1/1/131164128/turajoturowov_fezuvesusanabaj_lelobafobixasod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7011/8302/files/ignou_assignment_front_page_design.pdf
    • https://cdn.shopify.com/s/files/1/0438/0455/7469/files/70350057543.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/minecraft_1._13_pc_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/muxunorojenogafarado.pdf
    • https://cdn.shopify.com/s/files/1/0432/9845/5705/files/advanced_excel_training.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/46962580699.pdf
    • https://cdn.shopify.com/s/files/1/0439/9919/9390/files/champions_league_schedule_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0437/0818/6792/files/65_country_code.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/tapuwinopodew.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/all_adverbs_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0452/4307/2674/files/aqw_legion_revenant_class_guide.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_off0000727a.bin
5bca985810fdbc3ea1b444427754e9661b88e7bb4c6d372a73b7f6e1f1a26d82
pdf-font-stream PDF embedded font (sfnt) at offset 0x727A 5428 bytes
font_01_sfnt_off000084e6.bin
a2283cd243ca11fa7998e863ef46a078acb422741a91e4cf2d6f5b99cd69b9f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x84E6 11096 bytes