Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3988671c50f811…

MALICIOUS

PDF

38.2 KB Created: 2020-08-01 04:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd477dbdb8148f63591d43cb80928b7a SHA-1: acd0567342d048a3bd6adc173f6827e5eff347c4 SHA-256: 2b3988671c50f8110d5f43deab549ffa2e703edf83479805c5416e296adb0c7d
160 Risk Score

Malware Insights

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

The PDF file contains a lure for a 'Schlumberger petrel manual pdf' and embeds numerous links, including a critical redirector link to 'https://ttraff.ru/pify?keyword=schlumberger+petrel+manual+pdf'. It also features a high-severity heuristic for a password-protected archive lure, suggesting a multi-stage attack where the user is prompted to download an archive. The extensive list of external PDF links points towards SEO manipulation tactics.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/pify?keyword=schlumberger+petrel+manual+pdf
    • http://files.slpny.com/uploads/1/3/1/8/131871740/parixep-rafebi.pdf
    • http://files.koalapouches.com/uploads/1/3/2/6/132681513/8242133.pdf
    • http://files.targetedsalesservices.com/uploads/1/3/1/0/131070702/e3d35442b21c.pdf
    • https://cdn.shopify.com/s/files/1/0434/3391/8616/files/budozef.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/47510132132.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/jolilarisijapilo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/49083546696.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/jagemimavomotobaxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/mevibuxadewotuworubokila.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/galuta.pdf
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/bard_and_faulkner_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9880/8224/files/foundations_of_nursing_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/xidotetofen.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/99863366606.pdf
    • https://cdn.shopify.com/s/files/1/0428/4828/8935/files/16562682511.pdf
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/kilalonanopito.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_off00005840.bin
f5e35727d2614caa9cb5f7eebf83ad9e5671ff63ec2cedb4b2797d7961b0ae8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5840 5632 bytes
font_01_sfnt_off00006b34.bin
7300615b9ff9ee91cb6c44154f5c195442eb97429d564e5b6a2103f24b0bc7c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B34 9676 bytes