Malicious PDF — malware analysis report

Static analysis result for SHA-256 ead60cd33f980daf…

MALICIOUS

PDF

71.4 KB Created: 2020-08-22 18:04:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 784819627bacf0921d9bdb736a13f0a9 SHA-1: b0ad341bdcf48ef24f670397c04cccb943d74595 SHA-256: ead60cd33f980daf87bd70dca1c4575b8ef2180574195fa7671c28ab3fa57724
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=endometriosis+guidelines+2018+acog'. Additionally, it exhibits a PDF link farm behavior, embedding numerous links to external PDFs, many of which are hosted on Shopify. The document body, though heavily obfuscated, also contains the malicious redirector URL. This suggests a phishing or scam attempt designed to redirect users to malicious infrastructure.

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/pify?keyword=endometriosis+guidelines+2018+acog
    • http://files.lbwalker.com/uploads/1/3/2/6/132681910/dawezezutepi.pdf
    • http://files.creinvestmentadvisor.com/uploads/1/3/1/4/131483108/da0c4.pdf
    • http://files.studiodeceramiqueartvm.com/uploads/1/3/0/8/130813364/luxob.pdf
    • http://tezew.southslopepediatrics.com/uploads/1/3/0/7/130776428/c97d3656991.pdf
    • https://cdn.shopify.com/s/files/1/0433/2204/8667/files/billboard_awards_2019_performances_bts.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dosoxuwananeworatimuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6279/files/alexandrine_bird_information.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2346/files/69448489405.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/mufufenenene.pdf
    • https://cdn.shopify.com/s/files/1/0432/9553/9368/files/difference_between_nsdl_and_cdsl.pdf
    • https://cdn.shopify.com/s/files/1/0437/4514/9079/files/fujoribak.pdf
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/kovuvivibenoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/7138/1405/files/service_manual_t6._354.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/latusiroxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7063/files/ehome_infrared_transceiver.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0583/files/66302636926.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_off0000d8e8.bin
a023fd0b8b99d49cb3f9ef4e2835e086145758216f7f5cbc07661480e12f4346		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E8 5736 bytes
font_01_sfnt_off0000ec4e.bin
b557327f8a4aba5659bc3d0996d3f1c19aacd6f12385f49b7162ef34cc0daee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4E 10472 bytes

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