Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccaa9796317ec98d…

MALICIOUS

PDF

129.0 KB Created: 2020-09-08 06:15:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79f17015fe757b3b0ead392349687893 SHA-1: c3eaa964096227b0787cde882cf6e56de83db348 SHA-256: ccaa9796317ec98d6f1bc8060c364886ae6197770bcf22bcaea38b2d2648d8ec
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.com'. This URL is embedded within the document body, disguised as a free website template. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to 'static.usrfiles.com'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site or download further payloads.

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=free+website+template+html5+bootstrap
    • https://static.usrfiles.com/ugd/738632_07dd3c04cc4c4591936a34ad98f6b0f0.pdf
    • https://static.usrfiles.com/ugd/55f640_ccc3d41554b44c83ad30df84ac2b8cf0.pdf
    • https://static.usrfiles.com/ugd/f4de5e_9428fb469ed449a981b710070849a53b.pdf
    • https://static.usrfiles.com/ugd/6a22cb_22436969555e4622b1d0282521317915.pdf
    • https://static.usrfiles.com/ugd/a31856_3f2c218bc3c745a9b6dd7c8a6b6bf766.pdf
    • https://cdn.shopify.com/s/files/1/0428/2354/9094/files/76782697371.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/61879807591.pdf
    • https://static.usrfiles.com/ugd/41a0b6_4c584c81f1b744f8b65f48536e7c18b7.pdf
    • https://static.usrfiles.com/ugd/5926b4_e9911f1eb6e34bc7a072970189430426.pdf
    • https://cdn.shopify.com/s/files/1/0437/5976/3617/files/kulovobizod.pdf
    • https://cdn.shopify.com/s/files/1/0468/8897/6541/files/ralamunov.pdf
    • https://cdn.shopify.com/s/files/1/0437/5104/7329/files/chronic_pancreatitis_diet.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/32991294552.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/bestway_pool_heater_instruction_manual.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_off0001bfdc.bin
c4282c31a092cde172bd9127e3d66f7b8d71c684d940d2c429302e455836bc91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BFDC 5372 bytes
font_01_sfnt_off0001d202.bin
1c718471ab21cdcfd7798fd475264d5d54b219502ac951514cc4913ed4bd4f4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D202 10608 bytes

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