Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f57696b2c282fd5…

MALICIOUS

PDF

50.7 KB Created: 2020-08-08 14:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6174ae85fd3d325930dc9fbcca52a39a SHA-1: 22b29aaf55a64f9869b6b5f4ce86c0a0bee2fa28 SHA-256: 3f57696b2c282fd5bae4079b6dedf8e564cd03b651a02b31b6e04d7073fbd6c8
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.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains a reference to the same URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on CDNs.

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/wb?keyword=manual%20transmission%20stop%20leak%20lucas
    • http://files.karazhang.com/uploads/1/3/1/8/131859370/4203008.pdf
    • http://files.benjamincarkeyreplacement.com/uploads/1/3/0/7/130776420/pumozegidofife.pdf
    • http://mezivojeg.nicholastoddshumate.com/uploads/1/3/0/7/130775934/debimebopobadamomop.pdf
    • http://files.jimnewmanart.com/uploads/1/3/2/7/132740541/rijolu.pdf
    • http://deteta.georginaaliceart.com/uploads/1/3/1/4/131406717/8378728.pdf
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/kazajogejutowijoke.pdf
    • https://cdn.shopify.com/s/files/1/0454/5898/1022/files/capital_accumulation_and_economic_growth.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/mejosepe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6929/9101/files/18772721417.pdf
    • https://cdn.shopify.com/s/files/1/0428/8013/9423/files/ruwazepixunasodumifoxoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5957/5958/files/7710661097.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/10164557716.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/mmpi_test.pdf
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/56886908139.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/70068599047.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9621/files/90802342191.pdf
    • https://cdn.shopify.com/s/files/1/0434/3909/5973/files/gilijok.pdf
    • https://cdn.shopify.com/s/files/1/0436/8737/9094/files/coffea_liberica.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_off00008878.bin
3f087a39d9b4b4bac6b7a83f78b5840facbbbd7aa6015013120d116158aaede3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8878 5148 bytes
font_01_sfnt_off000099f5.bin
1b88f2e1b086a6a3217f5c89896e3565c657bdb12198935502363ad761e3becc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99F5 10420 bytes

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