Malicious PDF — malware analysis report

Static analysis result for SHA-256 d62203bcf47c4253…

MALICIOUS

PDF

45.8 KB Created: 2020-08-07 07:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d7b25b577aecf916a81811c2a650840 SHA-1: 198fa0804e0340b2a2c92fa5b32020314bb0cff2 SHA-256: d62203bcf47c4253f4b4ffadf7dedc89753c967d161b5e7002b89d7d86a8ba4a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically disguised as a solution for Outlook 365 PDF issues. The document body and embedded URLs reinforce this lure, directing users to potentially harmful sites. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate malicious destination.

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.com/pify?keyword=outlook+365+won+t+open+pdf
    • http://sasafosa.lzphotographydesign.com/uploads/1/3/1/4/131453574/9155156.pdf
    • http://files.coloradocowboycustoms.com/uploads/1/3/1/3/131379564/01dfb04aaf217.pdf
    • http://files.thesbkshop.com/uploads/1/3/1/3/131379730/refasavenubonu_lumusubes_parugu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/munewitaji.pdf
    • https://cdn.shopify.com/s/files/1/0441/0087/8488/files/ledatirevekuredazemozinog.pdf
    • https://cdn.shopify.com/s/files/1/0430/6580/2903/files/vawejolupodafinajokazobu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3373/9932/files/5604433086.pdf
    • https://cdn.shopify.com/s/files/1/0434/3706/4348/files/awakened_house_of_night.pdf
    • https://cdn.shopify.com/s/files/1/0431/1993/5655/files/pasisimesabube.pdf
    • https://cdn.shopify.com/s/files/1/0437/4780/3287/files/adverse_drug_reaction_article.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/mazemuxanezirowekopidem.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/74211769803.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/judixukevofigux.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_off00007502.bin
8f525363fc5c398ecf415bc79f345e85c94320cff9d48ff2900b09994210669c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7502 5176 bytes
font_01_sfnt_off000086cf.bin
7641394dda30d48c79dfff95caca013cee3d80d866c88de4e1d18c99a5eef372		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86CF 10760 bytes

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