Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee549300da9d7414…

MALICIOUS

PDF

47.3 KB Created: 2020-07-20 08:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e899c481db024b78abc38995fb83ae90 SHA-1: 7ae47f813eec326cfc007b44a0c028f229b265c1 SHA-256: ee549300da9d7414051666d47e6f0ac625906ebec7a4feafad9cbf7a76c29b2d
214 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a 'Godrej interio bed catalogue', aiming to trick users into clicking the malicious link.

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.
  • ClamAV: Pdf.Dropper.Agent-9527609-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9527609-0
  • 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.cc/wb?keyword=godrej%20interio%20bed%20catalogue%20pdf
    • http://files.charlielevine.org/uploads/1/3/1/1/131164054/151530.pdf
    • http://files.undividedla.com/uploads/1/3/1/0/131070169/0ad607053ca.pdf
    • http://files.lonemami.com/uploads/1/3/1/6/131607010/2023858.pdf
    • https://bufabod.files.wordpress.com/2020/07/kipopesiralufowisotegonu.pdf
    • https://bujoguzone.files.wordpress.com/2020/06/lekawovoja.pdf
    • https://rajebilakot.files.wordpress.com/2020/06/88532521302.pdf
    • https://woxonoxemu.files.wordpress.com/2020/06/34274774388.pdf
    • https://kifageve.files.wordpress.com/2020/07/40065764926.pdf
    • https://tuxanap.files.wordpress.com/2020/07/29878319199.pdf
    • https://xukukisogupu.files.wordpress.com/2020/07/86029011858.pdf
    • https://kepedizav.files.wordpress.com/2020/06/nibovufiwewu.pdf
    • https://gapigibodaj.files.wordpress.com/2020/06/napixur.pdf
    • https://nepowikuje.files.wordpress.com/2020/07/28147070016.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/62947964315.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/rerurosofikanalusududogo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/dawejajirizutumozub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/94044952673.pdf
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/81262865647.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/12422954086.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_off00007b87.bin
db565c0c595ac81fe1613f500e1f00770d99f9cbf6041e848ba67593bbfaa6e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B87 5272 bytes
font_01_sfnt_off00008d8c.bin
3f387fc0691a829333b1a26dc1552c6699f9541ff4e3e116da904addb63fa3b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8C 10036 bytes

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