Malicious PDF — malware analysis report

Static analysis result for SHA-256 64f356e1ecab1cc6…

MALICIOUS

PDF

45.4 KB Created: 2020-09-09 22:53:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a44647095eb00976ea7b77cc13dc9077 SHA-1: 4c730ad0fa8722176d7a3d34b3cd12bf08ec6b5e SHA-256: 64f356e1ecab1cc625f76c8f4ce863579610389abf6d8de9e579f71287cae0dc
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.me/wix?keyword=android+auto+day+night+mode+not+working, is flagged as a malicious redirector. The document body also contains this URL, suggesting an attempt to trick users into clicking it. The presence of a large number of external PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the PDF structure and malicious link suggest a phishing or redirection attempt, likely delivered as a spearphishing attachment.

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.me/wix?keyword=android+auto+day+night+mode+not+working
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/1908/2655/files/temelaki.pdf
    • https://cdn.shopify.com/s/files/1/0435/3009/2712/files/practical_aviation_security_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/4290/6007/files/list_of_all_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0435/8252/1503/files/3615843646.pdf
    • https://cdn.shopify.com/s/files/1/0431/7226/6138/files/45730778639.pdf
    • https://cdn.shopify.com/s/files/1/0432/6844/0224/files/aace_gestational_diabetes_guidelines_2018.pdf
    • https://cdn.shopify.com/s/files/1/0435/2973/2248/files/all_mathematics_rules.pdf
    • https://cdn.shopify.com/s/files/1/0434/9214/7366/files/1552695103.pdf
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/gobebalisejavuxiloxovajud.pdf
    • https://static.usrfiles.com/ugd/07e02c_d3b028b07afb4cceaf5e4279c941aeb3.pdf
    • https://static.usrfiles.com/ugd/575363_f69dec2e8fac4b0a8a7c87b7c3fbcb48.pdf
    • https://static.usrfiles.com/ugd/0b1cf2_b2fc8212d9d74df5bc426b5665ba0988.pdf
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/alimentos_transgenicos_historia.pdf
    • https://cdn.shopify.com/s/files/1/0450/7897/0533/files/appareillage_legrand_celiane.pdf
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/23103366609.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_off000073e3.bin
fe3cafff2a044456fda1085beb16516c4f0b12ab4798c00437721b7aef43ac20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73E3 5276 bytes
font_01_sfnt_off000085be.bin
2a08259a3e9f7188ed4e9a6eeca5afed0ba9ca30f1bd00b9646994219dbf0e32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85BE 10176 bytes

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