Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf78c078014df27c…

MALICIOUS

PDF

45.8 KB Created: 2020-08-10 05:12:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a46ece915f4a375e81e01e8835f0475 SHA-1: 9addbbe592cf10352ca337bd8bbf6b8bc23a0fa8 SHA-256: bf78c078014df27c8f7fe94ac1c82facd5742de321ca9b235864180dcec1881e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link redirects to `https://ttraff.ru/pify?keyword=genetic+algorithms+and+genetic+programming+pdf`. This indicates a link farm or redirector used to obscure the final malicious destination. The document body itself is largely unreadable binary data, but the presence of the malicious redirector URL is a strong indicator of malicious intent.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=genetic+algorithms+and+genetic+programming+pdf
    • http://files.volunteerconnectnow.org/uploads/1/3/1/3/131379578/298450.pdf
    • http://files.johnjosephhayes.com/uploads/1/3/2/6/132682295/gujif.pdf
    • http://files.scratchartedinburgh.com/uploads/1/3/0/7/130740458/norefiliguwox.pdf
    • https://cdn.shopify.com/s/files/1/0434/0292/0086/files/free_bradygames_strategy_guides.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6384/files/selagamez.pdf
    • https://cdn.shopify.com/s/files/1/0434/0744/2072/files/46248288297.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/espn_wnba_scoreboard.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/sutopazogaxenab.pdf
    • https://cdn.shopify.com/s/files/1/0435/6787/4207/files/53604051542.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/94018742304.pdf
    • https://cdn.shopify.com/s/files/1/0434/1304/5398/files/mobile_plans_microsoft.pdf
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/southwest_confirmation_number.pdf
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/31293453693.pdf
    • https://cdn.shopify.com/s/files/1/0438/8775/5432/files/hangman_game_java.pdf
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/12334504746.pdf
    • https://cdn.shopify.com/s/files/1/0433/2109/8408/files/cours_sur_l_afficheur_7_segments.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/69362685744.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_off00007481.bin
2cda783a4746a51e0d48d738d8968f14e12b9bfe00eef2a09b019a3eb7288baa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7481 5600 bytes
font_01_sfnt_off00008767.bin
492d0f72d6aaada0b7eda9b73b2225a11c81c2549fc0c1d5b2f5434e40a642df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8767 10084 bytes

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