Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e86d65b61d60ff2…

MALICIOUS

PDF

42.6 KB Created: 2020-08-23 00:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 956581a23a4f432bc9f55d874885550f SHA-1: e869b6ccf9e09cee1236005d7c252fe6254b3268 SHA-256: 0e86d65b61d60ff29c192c3635ea1b58ec8c05624c4becdefbb9e343c406cfa6
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to potentially malicious redirector infrastructure. One critical heuristic indicates the document links to known malicious redirector infrastructure, and another suggests a remote-support tool lure. The document body contains obfuscated text and URLs, including a link to 'ttraff.com', which is flagged as a malicious redirector. This suggests the PDF is designed to trick users into visiting malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.com/pify?keyword=powerpoint+slides+templates+business
    • http://files.stjohnlandconservancy.org/uploads/1/3/0/7/130776812/zewemudixi-zaragiw-masasiloxatefe-jevox.pdf
    • http://files.classicelegancellc.com/uploads/1/3/1/8/131856124/6129804.pdf
    • http://files.meliadf.com/uploads/1/3/0/8/130873848/2f253.pdf
    • http://purabobis.ecospiritdesigns.com/uploads/1/3/1/1/131164574/xarexoridobufagifuf.pdf
    • http://vuzil.russmillssigns.com/uploads/1/3/1/3/131379730/tolezitezewutuno.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/adobe_acrobat_free_win_10.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/14214641077.pdf
    • https://cdn.shopify.com/s/files/1/0462/0232/3094/files/carers_allowance_form_dwp.pdf
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/61731141993.pdf
    • https://cdn.shopify.com/s/files/1/0431/3432/0794/files/82414141610.pdf
    • https://cdn.shopify.com/s/files/1/0431/5381/7762/files/rezugemerafedipipewiwugop.pdf
    • https://cdn.shopify.com/s/files/1/0437/9561/1810/files/l_anorexie_mentale.pdf
    • https://cdn.shopify.com/s/files/1/0438/7300/9819/files/argentina_flag_day_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0461/7135/7336/files/38094826442.pdf
    • https://cdn.shopify.com/s/files/1/0459/9011/7543/files/87592388250.pdf
    • https://cdn.shopify.com/s/files/1/0437/8624/0162/files/47909197359.pdf
    • https://cdn.shopify.com/s/files/1/0457/7338/9980/files/ben_10_omnitrix_aliens_games_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/8086/6197/files/96627757647.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/pepusatirunotap.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067ed.bin
c857631a0b9feaec6e8462af867a2db2b7a18ed9f9a97f800784839ee313675b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67ED 5336 bytes
font_01_sfnt_off000079fb.bin
3bb38e589cced92143755f6450264b506c8b4d8baa72f73e13cd9174f2462174		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79FB 10264 bytes

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