Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67f631e8529ac73…

MALICIOUS

PDF

40.3 KB Created: 2020-08-24 23:25:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 430a8fd088ccf9695bda68503315c31e SHA-1: 0fa1a4b32cc0b5e49b51849bc1d7960e9410e81f SHA-256: d67f631e8529ac73c4645e2eca58e6e0953d6596fd255faacc5598d3339e0a6f
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=animated+images+of+nature+free'. The document body also contains a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The presence of a malicious redirector and a link farm indicates an attempt to distribute further malicious content or phishing pages.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=animated+images+of+nature+free
    • http://files.bwitched.com.au/uploads/1/3/1/8/131859261/nerivulubezuxo-fofowewopeze-zanidod.pdf
    • http://vudiniw.jayowens.me/uploads/1/3/0/7/130738531/1797600.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1085/files/bipunokupomijibaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/1238/1079/files/66886077134.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/fataregovulifinog.pdf
    • https://cdn.shopify.com/s/files/1/0433/8574/9665/files/23343466239.pdf
    • https://cdn.shopify.com/s/files/1/0447/9349/5709/files/45476313599.pdf
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/42680028578.pdf
    • https://cdn.shopify.com/s/files/1/0433/9931/5619/files/viwekina.pdf
    • https://cdn.shopify.com/s/files/1/0430/0547/7023/files/8011557015.pdf
    • https://cdn.shopify.com/s/files/1/0435/1816/5144/files/kikufazefefakezerun.pdf
    • https://cdn.shopify.com/s/files/1/0463/2500/6497/files/39666685056.pdf
    • https://cdn.shopify.com/s/files/1/0434/1936/9628/files/guide_me_o_thou_great_jehovah_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0447/8589/3542/files/irrigation_systems_design_planning_and_construction.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_off000052f5.bin
08649a60faea87ebcf949400d7e5638d4d64cb4fda74408aae9340a1322b9efe
pdf-font-stream PDF embedded font (sfnt) at offset 0x52F5 5068 bytes
font_01_sfnt_off00006410.bin
e89491a65301017a985363415e22ba614942dfab4fec3c393766bc72ac55be2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 10048 bytes
font_02_sfnt_off00008658.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x8658 4324 bytes