Malicious PDF — malware analysis report

Static analysis result for SHA-256 c446965c94db6723…

MALICIOUS

PDF

40.2 KB Created: 2020-08-23 23:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ff65e0aac916339da5b5d0f759fb7f1 SHA-1: eb5bb45d4608391c7d27ab538ac6e7f0739d2475 SHA-256: c446965c94db67235e0354831a5764aaa6b61d9fed975621eef31c76daea327c
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Assassin's Creed Odyssey DLC Atlantis' and a URL that appears to be part of a link farm designed to manipulate search engine results. The ML classifier also strongly indicated maliciousness. The primary attack vector is likely a user being tricked into clicking the malicious link under the guise of downloading game 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.cc/pify?keyword=assassin%2527+s+creed+odyssey+dlc+atlantis
    • http://xokesef.en.handyshop-traiskirchen.com/uploads/1/3/2/6/132682883/9504089.pdf
    • http://files.paintwithpizzazz.com/uploads/1/3/1/6/131606006/vakupipixit-wekubulemog.pdf
    • http://sevujo.teambor.com/uploads/1/3/2/7/132740478/9351675.pdf
    • http://xokesef.en.handyshop-tra
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/momorufesisuvigamakedo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1069/files/detedakejufefififikemofo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tozonolemudafolafoxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/gilorugokijexas.pdf
    • https://cdn.shopify.com/s/files/1/0439/5050/6142/files/11936536813.pdf
    • https://cdn.shopify.com/s/files/1/0448/6879/6578/files/bureaucratic_theory.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/51758964959.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5602/files/13764120238.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9863/files/wumuselojomikixojekezekox.pdf
    • https://cdn.shopify.com/s/files/1/0435/1872/2216/files/facebook_group_photo_size.pdf
    • https://cdn.shopify.com/s/files/1/0436/8397/1237/files/duxamodesomodewop.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_off00005fa7.bin
30965511894cb74aa5260254ee26176b4c67c3525b074e6fe4e6005eb92baa10
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA7 5060 bytes
font_01_sfnt_off000070e7.bin
a265f87d33cd6707b256f47de69c9407776609d01b1663e7f64bd958e13ebc17
pdf-font-stream PDF embedded font (sfnt) at offset 0x70E7 10096 bytes