Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a3006e610761625…

MALICIOUS

PDF

42.3 KB Created: 2020-08-13 11:09:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74f3a3821f58ae5b1d8cdc06f68129fe SHA-1: 901016beca07d53f9b2e1c61d4580c596752a2d6 SHA-256: 1a3006e6107616254535a136463267cb58dc9c98ea60c9fb514f81f18acca605
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on cdn.shopify.com, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text related to 'surface area of cones worksheet kuta' and the malicious URL, suggesting a lure to disguise malicious activity. The presence of a malicious redirector indicates an attempt to lead the user to a compromised site or phishing page.

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.com/wb?keyword=surface%20area%20of%20cones%20worksheet%20kuta
    • http://files.lockdescape.com/uploads/1/3/0/8/130874237/c3b6b6.pdf
    • http://files.anthonybarnesboxing.com/uploads/1/3/1/6/131637254/2133030.pdf
    • http://files.mayaminocha.com/uploads/1/3/2/6/132681670/6586792.pdf
    • http://files.christianservicelearning.com/uploads/1/3/0/7/130776164/danesesi_biduwudipaji.pdf
    • http://files.handcrafted1995.com/uploads/1/3/2/7/132740352/2381619.pdf
    • https://cdn.shopify.com/s/files/1/0428/5536/6822/files/bose_wave_radio_iv_manual.pdf
    • https://cdn.shopify.com/s/files/1/0441/0572/8152/files/automobile_parts_details.pdf
    • https://cdn.shopify.com/s/files/1/0434/4309/3660/files/cash_flow_statement_full_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/3490/1660/files/85992667470.pdf
    • https://cdn.shopify.com/s/files/1/0439/2743/7467/files/388543525.pdf
    • https://cdn.shopify.com/s/files/1/0437/9593/9488/files/ratotixalodifawepek.pdf
    • https://cdn.shopify.com/s/files/1/0429/1044/9820/files/behaviourism_in_the_classroom.pdf
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/fatinagezativajoxab.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/33087032695.pdf
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/pipamixuruw.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_off000066f0.bin
cb412a9e95a369c4fb40f9e4c588923cdae0da6e09fbca881b350d973a5115ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F0 5196 bytes
font_01_sfnt_off000078a2.bin
90d2de704ef5d5659383eeef66c84f6a3bca1ecb3721e793d1033f94385c118a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A2 10404 bytes

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