Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7bcc65bdff9ae66…

MALICIOUS

PDF

98.8 KB Created: 2020-09-07 17:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0b15669907355e16a705d0497aac62f SHA-1: 19892b7713302a8422fbbc10bedc61365aaa39d8 SHA-256: b7bcc65bdff9ae66dea68af8de12e93db4d177d5c4d2fc44eae49bf5e9a5fa09
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the URL and suggests a lure related to a 'Guanajuato city tour guide'. The presence of a visual download button heuristic further supports a malicious workflow.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=guanajuato+city+tour+guide
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/49823961574.pdf
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/pafuwewupadiriguwuwif.pdf
    • https://cdn.shopify.com/s/files/1/0433/6697/3589/files/73387211961.pdf
    • https://static.usrfiles.com/ugd/64e449_915a158ef66248d38427e6ae9957b224.pdf
    • https://static.usrfiles.com/ugd/abd6ea_ff30b8736f354b5fb94ca0eb05e2ae31.pdf
    • https://static.usrfiles.com/ugd/ab059d_ab6e562498d543e281dd492ef747b897.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e3272093a2246d1b0fe2b1954061fba.pdf
    • https://cdn.shopify.com/s/files/1/0432/5841/3216/files/12_week_bulking_workout.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3799/files/anchor_baby_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0434/2425/2071/files/7506007915.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/sosejipa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7439/6065/files/bescherelle_grammaire.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/human_centered_design_toolkit_ideo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0857/3091/files/accounting_vocabulary_english_german.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/
    • https://static.usrfiles.com/ugd/abd6

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb5c.bin
5bbec6eebfad25805c1015900adbe7b23076a13cb32eab149c6922fc2fa35337
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5C 5104 bytes
font_01_sfnt_off00010cd3.bin
2c14123dd13b6a9efbae3735180680f900746115691e5728ca59eb275c734fab
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD3 17464 bytes
font_02_sfnt_off00013c0e.bin
b95b3aace37e0caf0c429f00082cb03abf73696648e35014748cd2062b11b960
pdf-font-stream PDF embedded font (sfnt) at offset 0x13C0E 10580 bytes
font_03_sfnt_off0001606a.bin
eaf726e29768958607ebc481a068388d743dd70dbab063fad1cf564485c300fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x1606A 18392 bytes