Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b33760b99261b67…

MALICIOUS

PDF

45.8 KB Created: 2020-08-18 22:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6464c3f04a9b22bc68c0a75b34b254c3 SHA-1: 63bd2eef8ce1f0871f3694c06769191d48455459 SHA-256: 1b33760b99261b676f1e37a825fb039b99c9dea5fc11a5fa0af42e64fdb758ca
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous external links, likely for SEO manipulation or to host further 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.cc/pify?keyword=masked+singer+monster+performance
    • http://files.junedulshahid.com/uploads/1/3/1/3/131397973/06700.pdf
    • http://wufira.eccollaborative.com/uploads/1/3/0/7/130776699/6038d765adb8.pdf
    • http://files.blueridgecru.com/uploads/1/3/2/6/132695384/jebuwoko-kemonire-zuzudumerunele-jutevodeme.pdf
    • http://zolegi.jarmdelboccio.com/uploads/1/3/1/4/131454012/bamiretuluboguk-rekilimafiwij-keput.pdf
    • http://zolegi.jarmdelboccio.com/uploads/1/3/1/4/131454012/bamiretulu
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/92025250428.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/alter_ego_3_b1.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1942/files/gasarirusirosipexezibixi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/gipodavijowubador.pdf
    • https://cdn.shopify.com/s/files/1/0433/4184/0552/files/votokobedimopur.pdf
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/91047547505.pdf
    • https://cdn.shopify.com/s/files/1/0437/5271/8494/files/angular_momentum_formula_derivation.pdf
    • https://cdn.shopify.com/s/files/1/0436/6322/9078/files/anything_but_typical_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7350/files/62277784983.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_off000074f1.bin
714433f8e04bb116dc4c18d912b96574d63ea2c5af9e3956f07c28d8d1ca6cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F1 5512 bytes
font_01_sfnt_off000087a0.bin
49e785be1636f09d7d5eebb5aae546895ad06422542b6c7d5365b1de41df1040		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87A0 10096 bytes

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