Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc9693527378eb3…

MALICIOUS

PDF

37.0 KB Created: 2020-09-14 03:39:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 964a4f4538b1105b4382600fefa0fd49 SHA-1: a06ec2ed78cab3424f654f906a3f8352b91c4ccc SHA-256: 9dc9693527378eb3fa846c9739443497149bf837088b1164fc80a6930eba37f5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.me/wix?keyword=the+only+exception+guitar+chords+easy', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a link farm or redirection scheme designed to lead the user to malicious content. No scripts were extracted from this sample.

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.me/wix?keyword=the+only+exception+guitar+chords+easy
    • http://files.pennyanambulance.org/uploads/1/3/2/6/132681602/a05af2c3d15.pdf
    • http://files.broadwaypinups.com/uploads/1/3/0/8/130813765/8391871.pdf
    • http://zebumu.alfristonarts.co.uk/uploads/1/3/2/6/132682787/pibugexawifeb_leguz_wubusuvewome.pdf
    • http://files.schecktech.com/uploads/1/3/1/3/131381910/wixakuzaguk.pdf
    • http://files.rawpetsrule.com/uploads/1/3/0/9/130969855/takisebekozi_deriloxozi_jasedamotobef.pdf
    • https://static.usrfiles.com/ugd/55f640_542548ee58624461b108285566c0ee48.pdf
    • https://static.usrfiles.com/ugd/7ef0dc_bc247e05671c4bf3b7a14289e83a9c1c.pdf
    • https://static.usrfiles.com/ugd/3d0627_579c1229a49e4f5cba5da14ed0801abe.pdf
    • https://static.usrfiles.com/ugd/ede58b_f868ec20f99c4d6387fb59ef5235a918.pdf
    • https://static.usrfiles.com/ugd/05900a_ac2340b0a9a0455ab74947b28d9a5e47.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f09115c31ba43d1998f27242f01d6c4.pdf
    • https://static.usrfiles.com/ugd/09c3c7_18b7bdbaab814d128a59cdb7c37717c7.pdf
    • https://static.usrfiles.com/ugd/debbe1_1446c1a4607b4636afb0b85b9c534395.pdf
    • https://static.usrfiles.com/ugd/de02f3_9b0787f4a8264ad4b81c090fe649c310.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0374/files/bloons_td_6_hacked_apk_2._1.pdf
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/rinazan.pdf
    • https://cdn.shopify.com/s/files/1/0483/0019/6002/files/understanding_the_atoms_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/6703/8106/files/14459051175.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_off000051cc.bin
1728856d92903d60fe72070312233c9f9521a7a316d120952f4c252e2957619d
pdf-font-stream PDF embedded font (sfnt) at offset 0x51CC 5452 bytes
font_01_sfnt_off0000645c.bin
2b3d43708e3b4a212b946e3807b2cae9c9aef1e1be5b423e68c834a5c433859b
pdf-font-stream PDF embedded font (sfnt) at offset 0x645C 10220 bytes