Malicious PDF — malware analysis report

Static analysis result for SHA-256 b80ee92b9c51d98c…

MALICIOUS

PDF

42.8 KB Created: 2020-07-30 12:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62083f9f1b95bdde3a368c86ca3d083e SHA-1: 4d89c8b0ba1a0a67707d52c0e730b89b341d9083 SHA-256: b80ee92b9c51d98c0bb2b5b9121c30e87d6db02573719cb72e2f8d7b5079ec68
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, a technique often used to create SEO link farms and direct users to malicious sites. One critical heuristic firing indicates a PDF redirector link to 'ttraff.com', which is known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Pdf bestanden verkleinen mac' and 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. The presence of numerous Shopify URLs, while many are confirmed benign, likely serves to add legitimacy to the overall deceptive structure.

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=pdf+bestanden+verkleinen+mac
    • http://files.rabbifuchs.com/uploads/1/3/2/7/132740277/divejimulira_xutaronilelal_jimebejavul_kuzalex.pdf
    • http://files.brunerscience.com/uploads/1/3/2/6/132681517/jolup.pdf
    • http://files.movingthroughmusic.com/uploads/1/3/2/7/132741389/repojufafozokisi.pdf
    • http://files.rabbif
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/36285125229.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/67759221162.pdf
    • https://cdn.shopify.com/s/files/1/0430/9899/6889/files/likelajerig.pdf
    • https://cdn.shopify.com/s/files/1/0432/6424/5925/files/nulokekidemi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6087/files/12149441975.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/98717310504.pdf
    • https://cdn.shopify.com/s/files/1/0427/4195/6775/files/dazexa.pdf
    • https://cdn.shopify.com/s/files/1/0437/9007/4005/files/xinazezowososaxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/lonaxudaxovipiwepawam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51982080438.pdf
    • https://cdn.shopify.com/s/files/1/0437/8142/3262/files/fifedujidoxodupixal.pdf
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/juvavasuxixosep.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_off000065a8.bin
7b96a99d317dabd520398caa3205f2875a43c518b56489d013dae047e93d1d0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A8 5112 bytes
font_01_sfnt_off000076ea.bin
614471cc709964dd81ef09007992960eb86a2dd46db610256802e9434d38d1ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76EA 11616 bytes

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