Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c1e263fe796696…

MALICIOUS

PDF

40.1 KB Created: 2020-08-22 01:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cecfa0e485c72ca2f79563e9c89afaa9 SHA-1: 8fa070e3ad4bdf37d46c606f5cb9db955660f2e9 SHA-256: 01c1e263fe796696f649942ab1f9b9f57a50d291d22143899c5fbb90df0ecec6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=clearview+rc+flight+simulator', suggesting a lure to a malicious site. The ML classifier strongly flagged this PDF as malicious, and the presence of a malicious redirector link indicates an attempt to deliver a payload or phish users.

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.cc/pify?keyword=clearview+rc+flight+simulator
    • http://files.filmaim.com/uploads/1/3/0/7/130740536/saxof_lizedi_joziso_xatiritudi.pdf
    • http://files.womensvaad.com/uploads/1/3/1/4/131452817/10d9c56.pdf
    • http://files.national-energy.us/uploads/1/3/1/3/131379498/jatidovola.pdf
    • http://files.rippertoys.co.uk/uploads/1/3/1/1/131164097/bunaxut_dewopapojaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/bala_tripura_sundari_mantra_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3382/9271/files/63161861548.pdf
    • https://cdn.shopify.com/s/files/1/0432/9114/8444/files/93983309056.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/47298708863.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/strategy_business_magazine_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6490/1284/files/chaliya_chaliya_song_320kbps.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7002/files/xovelebuzi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9915/9718/files/18840851453.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/11515068013.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/94279197697.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_off00005ce2.bin
70427cc802f1f88b42725494285fbc789de0782c0fab56c0b01de9a5f959396b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE2 5352 bytes
font_01_sfnt_off00006f0c.bin
5fbd4222402968a81e3645290b963a1deca3a839cecd1a8445d92d121244dd83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0C 10700 bytes

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