Malicious PDF — malware analysis report

Static analysis result for SHA-256 54610b89d8e6d6da…

MALICIOUS

PDF

59.2 KB Created: 2020-08-05 00:23:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4217af069d2d7396dabdf6a304845bfe SHA-1: a0a4da11d323b80a21010d3b32a8d0e840dd8c2d SHA-256: 54610b89d8e6d6da8256b33e2d102daf063b763cd1c2cf838303ca98ce4c80da
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised with a search term. This suggests a phishing or malware delivery attempt. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farm abuse. No scripts were extracted from this sample.

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=marathi+aarti+sangrah+free+download+pdf
    • http://files.ibuysfv.com/uploads/1/3/0/9/130969176/timezo-waweduserelegu-bakivu-rerakadulovube.pdf
    • http://files.starlingsintheuk.co.uk/uploads/1/3/1/3/131379183/2518609.pdf
    • http://files.fireriver.tv/uploads/1/3/0/8/130813696/084025de.pdf
    • http://files.dianapishnerwalker.com/uploads/1/3/1/4/131483147/pejosexasimadetib.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/wigadobonigagiwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0316/files/88181666597.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/92464963026.pdf
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/kabivibemomagaxubef.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/mu_answer_sheet_toeic.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9782/files/public_finance_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fiwowosilikaragufes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/vujesifupeneva.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/87041320854.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5965/files/1506595560.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/xadejotoretalibemexunibid.pdf
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/macklemore_thrift_shop_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7575/files/8403309238.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/13601017626.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_off0000a3a2.bin
aa6ce9e3ffbc0b5fb41114e92171d824727628fc5ed03c070793f3af26605321		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A2 5400 bytes
font_01_sfnt_off0000b61e.bin
d1e23676d00047562198bee21a7d60c96f909bbbab0d01053d32543ae4a4131e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB61E 13280 bytes

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