Malicious PDF — malware analysis report

Static analysis result for SHA-256 060e37576b7882b9…

MALICIOUS

PDF

47.6 KB Created: 2020-08-14 02:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2362ec17674975b0175073274efcb4be SHA-1: 76d1bb8412a7c45ea57d74ee7d9bb77b3accc4bc SHA-256: 060e37576b7882b902b73ebae9640ad7d054748036f4adde8fe77b9c5742b908
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and references 'bike parts and forms', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, further supports the link farm and redirection activity. No scripts were extracted, but the primary attack vector appears to be directing users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=bile%25C5%259Fik+adlar%25C4%25B1+ve+form%25C3%25BClleri
    • http://files.seasholes.com/uploads/1/3/2/6/132680813/4691402.pdf
    • http://files.larsonartgallery.com/uploads/1/3/0/9/130969054/2dde1f10f.pdf
    • http://files.okanagangolf.ca/uploads/1/3/1/4/131437680/5382098.pdf
    • http://files.mrsvietnamworld.net/uploads/1/3/0/7/130740033/biwamufu.pdf
    • http://files.winfielddsm.com/uploads/1/3/2/6/132696414/gamelavexeme-giluso-wezizixumita-mipopolasefume.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/7668/8798/files/xijigadajikole.pdf
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/39792913330.pdf
    • https://cdn.shopify.com/s/files/1/0437/0972/6870/files/gawugaxavorubidusifetaro.pdf
    • https://cdn.shopify.com/s/files/1/0433/3921/9099/files/pocket_bike_engine.pdf
    • https://cdn.shopify.com/s/files/1/0427/9857/9879/files/sedowisuxisuwogudeme.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/80485113840.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/xomirido.pdf
    • https://cdn.shopify.com/s/files/1/0429/4914/8838/files/fenujizuziserusifoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/84940562709.pdf
    • https://cdn.shopify.com/s/files/1/0434/6226/2936/files/refowejaguteforekukege.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/favararizikimuleta.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/98105385821.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000634b.bin
5a9f1bdb1e1f7af47c3d1cf97278ec6d41e7b5e32fb22636e850b49612d32ac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x634B 5048 bytes
font_01_sfnt_off0000747a.bin
dd4c2135aaad9bbef38b799b1dc3db7fe99dc39a284677972510289318719238		 pdf-font-stream PDF embedded font (sfnt) at offset 0x747A 14932 bytes
font_02_sfnt_off0000a1a1.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A1 4324 bytes

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