Malicious PDF — malware analysis report

Static analysis result for SHA-256 a706e3d32b0c2bd9…

MALICIOUS

PDF

37.2 KB Created: 2020-08-10 06:20:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71eaab442c4f6d0fabbc5c63fbc54b40 SHA-1: 6c9201a49d656ffee07b6f27bd8ee39ca811a159 SHA-256: a706e3d32b0c2bd99c1d5aab3a973049965cf212ca1844a3dcb0b18188f84d7b
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but also includes a critical link to a known malicious redirector at `https://ttraff.ru/pify?keyword=broken+vessels+chords+pdf+g`. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. No scripts were extracted from this sample.

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.ru/pify?keyword=broken+vessels+chords+pdf+g
    • http://files.autumnselover.com/uploads/1/3/1/4/131406412/gakixuwujotorep-pemobudir-pipaka-xobomifiwozogi.pdf
    • http://files.team1sports.us/uploads/1/3/0/7/130776075/f69e7c01a13.pdf
    • http://files.resiliencestudiesconsortium.com/uploads/1/3/1/8/131871907/447f15da9.pdf
    • http://files.mksax.com/uploads/1/3/0/8/130813988/5377796.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/fegojukutobisinimezota.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/judopuniwaluxapaxamuziju.pdf
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/25367944363.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/74426977373.pdf
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/ansi_c_dennis_ritchie.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/git_revert_last_commit_after_push.pdf
    • https://cdn.shopify.com/s/files/1/0434/2346/5623/files/99312865824.pdf
    • https://cdn.shopify.com/s/files/1/0437/9597/2256/files/86413411442.pdf
    • https://cdn.shopify.com/s/files/1/0446/6917/3923/files/business_law_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/davunaxejapezuxipuwuwozom.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/57478080835.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004853.bin
25bb1f966235a4eac824c782417de4d5c852a6b2c70887f2699b67d99ac0f7ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4853 5040 bytes
font_01_sfnt_off00005972.bin
ae94ab129c8d3b2ca765ee2f77e2cc107f85d5fe25089aab77518cd4b0711660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5972 9476 bytes
font_02_sfnt_off000079e7.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79E7 4324 bytes

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