Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f048503e3abca96…

MALICIOUS

PDF

42.2 KB Created: 2020-08-23 20:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51d7d4357bcdb4f93a6cb506d724972b SHA-1: 75e46a1b62ea19c72a6c67e9fd971d81ce30d670 SHA-256: 1f048503e3abca966ec40a7d46a7f42c9114bbe72ac847aee8bf1cf652283dbe
140 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to insurance and manuals, suggesting a lure to disguise the malicious links. The presence of a 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external PDF links, likely for SEO manipulation or to host further malicious content. The 'SE_CALLBACK_LURE' heuristic suggests a potential for callback phishing or tech-support scams.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=infinity+insurance+cambodia+annual+report
    • http://setati.ghbeyondsurvival.com/uploads/1/3/1/3/131379182/83d7300977b4fe.pdf
    • http://files.teachingbeth.com/uploads/1/3/1/3/131379268/zatizek.pdf
    • http://files.tludramaticmedia.com/uploads/1/3/1/3/131383380/lijapenirubijib.pdf
    • http://files.blueridgeracing.net/uploads/1/3/1/3/131381555/gikulolewimiser.pdf
    • http://files.calpars.com/uploads/1/3/2/7/132740951/mofugowulax_wogiro_gikiverusani.pdf
    • https://cdn.shopify.com/s/files/1/0435/9992/1315/files/chrysler_voyager_2002_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/50526812818.pdf
    • https://cdn.shopify.com/s/files/1/0438/9978/1288/files/binomische_formeln_bungsaufgaben.pdf
    • https://cdn.shopify.com/s/files/1/0434/1920/5789/files/game_controller_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/papotapibubogutovisus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80463449019.pdf
    • https://cdn.shopify.com/s/files/1/0429/3866/3079/files/3394833302.pdf
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/mulapak.pdf
    • https://cdn.shopify.com/s/files/1/0448/7308/9186/files/acculturative_stress_scale.pdf
    • https://cdn.shopify.com/s/files/1/0433/7952/3751/files/ielts_speaking_all_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/traditional_approaches_to_the_study_of_political_science.pdf
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/92426268146.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/pinegizomo.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_off00006329.bin
af9594465705ce19e8cd0f47d07e99c4eb5d3a01e716733a77d98f1a8dcf28c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6329 5480 bytes
font_01_sfnt_off000075a9.bin
b09043c65af04f76c1448521d5f796d05e31d52b1d00b8801e98904a714caa01
pdf-font-stream PDF embedded font (sfnt) at offset 0x75A9 11212 bytes