Malicious PDF — malware analysis report

Static analysis result for SHA-256 c859d08156f62afc…

MALICIOUS

PDF

46.8 KB Created: 2020-08-21 20:31:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ae830238e4f82792567b6a76724d2b9 SHA-1: e76e9b1f883bd27125a12a3473429afe904009eb SHA-256: c859d08156f62afce55f90aa46fed97e307cd8470dd87453972d9fed35b43ab6
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a utility for merging PDF pages. The document body and heuristics indicate a mass external PDF link farm, suggesting a large-scale distribution effort. The primary attack pattern involves luring users to malicious infrastructure via a seemingly helpful document.

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.cc/pify?keyword=fusionner+2+pages+pdf+en+1
    • http://files.guidingwithpurpose.com/uploads/1/3/1/0/131070539/9563766.pdf
    • http://files.sarahelizart.com/uploads/1/3/1/8/131856195/ad50d2c111dbec0.pdf
    • http://files.captainstinkyandsailorpuss.com/uploads/1/3/1/4/131437394/negorikov-fakadelivadiw-funiwuxuvew.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3784/files/josudugoxu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/48668081437.pdf
    • https://cdn.shopify.com/s/files/1/0434/2526/7877/files/beethoven_silence_piano.pdf
    • https://cdn.shopify.com/s/files/1/0434/2048/3751/files/53565256256.pdf
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/2283857398.pdf
    • https://cdn.shopify.com/s/files/1/0434/2965/8790/files/53486149571.pdf
    • https://cdn.shopify.com/s/files/1/0434/4505/9749/files/70347451867.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/27465755593.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_off000059ee.bin
9be05e5ad676cc5ecc88dcf65117d1e66921cb3314a27a5a786a93cca2ba35f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59EE 5316 bytes
font_01_sfnt_off00006c13.bin
fc9d89bc08d014ca02e09d71a563e4f24df31e5bc3e3f74b1d954ed15a677c85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C13 15284 bytes
font_02_sfnt_off00009962.bin
31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9962 16204 bytes

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