Malicious PDF — malware analysis report

Static analysis result for SHA-256 c909e7aadfab952b…

MALICIOUS

PDF

41.4 KB Created: 2020-08-22 19:13:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 347ba88fecd5f5fe810b2c06536c156e SHA-1: 7c1ebd44f79d25f82ccff53b540d61d1556f4dd9 SHA-256: c909e7aadfab952b21c994022badf10df0905925a2d2f41ae6632301afb8a185
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious and contains a critical heuristic indicating it links to a known malicious redirector. Additionally, it exhibits characteristics of a PDF link farm, hosting numerous external PDF files, many on Shopify domains. The primary malicious URL identified is https://ttraff.cc/pify?keyword=0352+anti+tank+assault+guided+missileman, which likely serves as a gateway to further malicious content or phishing pages. The presence of multiple Shopify links suggests an attempt to obscure the true destination or leverage legitimate platforms for malicious 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=0352+anti+tank+assault+guided+missileman
    • http://vedoxogi.sparkysplace13.com/uploads/1/3/2/6/132695569/newixoni.pdf
    • http://files.bonneygirlphotography.com/uploads/1/3/2/6/132681204/sapoxorufewodod.pdf
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/eichmann_in_jerusalem_deutsch.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/former_capital_of_alaska_crossword_clue.pdf
    • https://cdn.shopify.com/s/files/1/0430/8320/2711/files/sufuzedebozawabekimuwov.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/mimadarofam.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/kazif.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/35796085773.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3716/files/65687971458.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/xusowexirumixi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/zuxanuwitazubozusejavip.pdf
    • https://cdn.shopify.com/s/files/1/0431/6944/8097/files/18820255556.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/rapidex_english_speaking_course_kannada_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/9300/7272/files/6514914871.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000638a.bin
ad45f1af4162842185179d2829687612a9dbcdc223679cbf99ff9769ea452c90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x638A 5580 bytes
font_01_sfnt_off00007661.bin
8b0699c34321763f6602bacbd6f10dcdcd926ff471bae186b237177533a7499e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7661 9968 bytes

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