Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c89931240f53cff…

MALICIOUS

PDF

52.6 KB Created: 2020-08-22 02:17:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4c3601f0be8a53987c7a69eba037f52 SHA-1: ee0601aaa80fb4d26126af940000bf10b5d73e04 SHA-256: 1c89931240f53cffbead7916e377b2da9f21085fb8f55492f93af4731f5b5fa9
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, contains the URL 'https://ttraff.ru/pify?keyword=template+dna+to+mrna', which is flagged as malicious. The presence of a 'Password-protected archive lure' heuristic suggests the document's purpose is to trick the user into downloading and decrypting a malicious payload. No scripts were extracted from this sample.

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=template+dna+to+mrna
    • http://titowumu.qsmassagestudio.com/uploads/1/3/0/8/130814340/mofenef_wixipejobijugo_bovawunol_dofaguwolo.pdf
    • http://files.susanmortimer.co.uk/uploads/1/3/2/6/132682681/747400.pdf
    • http://files.capristo-usa.net/uploads/1/3/1/4/131406600/8061570.pdf
    • http://files.travelswithnicolle.co.uk/uploads/1/3/0/7/130740490/7983490.pdf
    • http://files.zamdevelopsj.org/uploads/1/3/1/1/131164534/7449164.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bepojarovizezeba.pdf
    • https://cdn.shopify.com/s/files/1/0434/3467/2294/files/midday_meal_supervisor_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/1897/7443/files/tapebedomane.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/economic_importance_of_medicinal_plants.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nanejixiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0119/files/aashto_tp_70_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/72529930540.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdf
    • https://cdn.shopify.com/s/files/1/0433/0189/6347/files/xomuletupozosepinenelo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/fasevurexupebuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/purupemijafonofawifa.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_off000084de.bin
0d6219fe806207cfd8c5004fd97c4c1cb91493ec71ae8ae98f41c9fe3bf0e283
pdf-font-stream PDF embedded font (sfnt) at offset 0x84DE 4616 bytes
font_01_sfnt_off0000946b.bin
47bd2ddbbe7a9eb931c652b46aa82bf6db2271a693a4bae42619c5fec00c5c61
pdf-font-stream PDF embedded font (sfnt) at offset 0x946B 10208 bytes
font_02_sfnt_off0000b70c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xB70C 4324 bytes