Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfad26273ed154f0…

MALICIOUS

PDF

41.1 KB Created: 2020-08-14 17:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3285ab7b76c46c7959aea9e6c8445d5d SHA-1: 4c6a9034d4b2066c953d13a394e268227d3fd5a0 SHA-256: bfad26273ed154f0af68babef724fee55f6d9520c0fb85139e2893285f7d0f20
128 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body text and heuristic firings indicate a lure related to payment requests. The primary malicious URL identified is ttraff.com, which is used to redirect the user to a payload or further malicious content.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=payment+request+form+gmu
    • http://files.autovairavimas.lt/uploads/1/3/0/7/130776599/7828728.pdf
    • http://files.heatherdexter.com/uploads/1/3/1/3/131381480/bozegonapinovaminume.pdf
    • https://cdn.shopify.com/s/files/1/0436/0113/3731/files/adjectives_and_prepositions_esl.pdf
    • https://cdn.shopify.com/s/files/1/0439/1976/9755/files/honkai_impact_3rd_crystal_farm.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/is_vpn_worth_it.pdf
    • https://cdn.shopify.com/s/files/1/0435/1636/2920/files/gabigepezuje.pdf
    • https://cdn.shopify.com/s/files/1/0433/0605/7883/files/24018951084.pdf
    • https://cdn.shopify.com/s/files/1/0431/9834/9471/files/27913865597.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/57195041174.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ridojunewosinojep.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/56681133210.pdf
    • https://cdn.shopify.com/s/files/1/0434/0206/8131/files/lords_of_the_fallen_build_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/barron_s_sat_2_biology.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/25748526254.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_off00006176.bin
019675d9e67204a40b6c6cd7283d9082621e453dc7ee2ea420d4673ff5f085f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6176 5284 bytes
font_01_sfnt_off00007361.bin
fbbdb8a530cf3b601f827ee72e98cfd71a9b2da5716dcf0b642ab19e71a0486b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7361 10900 bytes

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