Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf04c1170001370c…

MALICIOUS

PDF

38.0 KB Created: 2020-08-31 23:12:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92eba44de19cfd2467e14743c7d499dc SHA-1: 3d4edf3d85eec4945180d8df67c05b8d3eac3635 SHA-256: bf04c1170001370c206ec44cf141064a3a6ec4ee746b81f6a5a5dda99e746743
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a sales listing for insulation materials. The document body and embedded links strongly suggest a lure to a malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms the presence of a link to known malicious infrastructure.

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.me/wix?keyword=3+foam+sheet+insulation+for+sale
    • https://static.usrfiles.com/ugd/934fc3_89076706df21469bba366ca61bb03986.pdf
    • https://static.usrfiles.com/ugd/58a813_6c6b1e4064054b75b7028007f14207b6.pdf
    • https://static.usrfiles.com/ugd/83b1b3_77ad9cb587cb4a6695620e6bd9631ebb.pdf
    • https://cdn.shopify.com/s/files/1/0435/6043/5873/files/mdecin_anesthsiste-_ranimateur_formation.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/fomopedelul.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/15365116393.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89573664631.pdf
    • https://static.usrfiles.com/ugd/7ef0dc_1461c0d6d3454e7cafe3aa5c460d9972.pdf
    • https://static.usrfiles.com/ugd/b8c837_a20dfa2f5b354ac8b95b41c6260479c1.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7711/files/90696201677.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/59329429704.pdf
    • https://cdn.shopify.com/s/files/1/0433/6805/4940/files/guluwer.pdf
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/evaluation_emc_6eme_devenir_collegien.pdf
    • https://cdn.shopify.com/s/files/1/0432/8072/8224/files/81191300625.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_off00005666.bin
88d10f91ccc40bf9d4089b972c2c3524a5b29756cf6804f2041ee1550071af19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5666 5076 bytes
font_01_sfnt_off0000677a.bin
c455c115400d14a4c42b0a23dbe38ec0a9cf6579ec68588764386292fd2c9da9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x677A 10544 bytes

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