Malicious PDF — malware analysis report

Static analysis result for SHA-256 928382b39f2df525…

MALICIOUS

PDF

44.2 KB Created: 2020-09-06 05:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 967ce6a2f0c84f31bfc96185bd255218 SHA-1: 96556892d2cee59a383b3c97d555c1a20e8ee2a4 SHA-256: 928382b39f2df525d9b07468b81930658cf9a36b9d7b4132a34feca5ebf74462
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised with keywords like 'atomic pinball apk'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on static.usrfiles.com. The primary malicious URL identified is https://ttraff.club/wix?keyword=atomic+pinball+apk, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same lure text and the malicious URL.

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.club/wix?keyword=atomic+pinball+apk
    • https://static.usrfiles.com/ugd/8de238_0508c1e297074f49a539843ae3a8e661.pdf
    • https://static.usrfiles.com/ugd/b8c837_d08cb33ae5f14941bfc7375b4b153197.pdf
    • https://static.usrfiles.com/ugd/2486b5_b8eee82c976041eca271b38f0eb0ab36.pdf
    • https://static.usrfiles.com/ugd/217d68_65e21f91510246ce9b69df00d67b07b4.pdf
    • https://static.usrfiles.com/ugd/ecec20_392d9059d8ba43faa46356fea75bbdfe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8306/3715/files/peter_eisenman_giuseppe_terragni_transformations_decompositions_critiques.pdf
    • https://cdn.shopify.com/s/files/1/0434/3595/0241/files/oil_painting_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/88167826546.pdf
    • https://cdn.shopify.com/s/files/1/0439/3759/5560/files/23966029361.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7777/files/79467423587.pdf
    • https://cdn.shopify.com/s/files/1/0434/2395/7144/files/gowuzodebi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/81038752611.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/26906823137.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dazexirorojukulovamedifuv.pdf
    • https://static.usrfiles.com/ugd/c7a620_0a0eabff34fe4e68980e025dbd462e37.pdf
    • https://static.usrfiles.com/ugd/b8c837_169ef3c8b5bf44cd98003b3c48c365e9.pdf
    • https://static.usrfiles.com/ugd/ec0c41_ac4ee690eef34048acc221c60f21d9a0.pdf
    • https://static.usrfiles.com/ugd/e42ee3_a9093fc1bde64c35ad077f7fc4f76549.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a55b82ce3a84c6fac59833af00e8dda.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006206.bin
d7006b4e4e062bf8f65ea6174e8fc883ec484fb6333b27ac4d265ed9bc6856ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x6206 4668 bytes
font_01_sfnt_off000071b8.bin
31f94fba89b8d7be76f7662442bbb5f14268425114bfa086e13e37e1fa69e3db
pdf-font-stream PDF embedded font (sfnt) at offset 0x71B8 10560 bytes
font_02_sfnt_off000095be.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x95BE 4324 bytes