Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac5c59f2e18c4f4…

MALICIOUS

PDF

40.8 KB Created: 2020-09-02 22:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b47fe2e8034fd1db4670874a8d80be42 SHA-1: 7bafbffade0c619e47359a041852c14b6b18728c SHA-256: 7ac5c59f2e18c4f4181b50f5b29c1247d5f877efb2903e0e8c5301c3bd845564
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'cross platform games xbox one' and a URL that points to a malicious redirector. This indicates an attempt to trick users into visiting malicious sites, likely for phishing or malware distribution.

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.club/pify?keyword=cross+platform+games+xbox+one
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/0191/2224/files/zejemidizi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7975/3109/files/317922915.pdf
    • https://cdn.shopify.com/s/files/1/0437/7686/8510/files/pazevek.pdf
    • https://static.usrfiles.com/ugd/7041e4_524df4021fcd483e945c6c38758e5560.pdf
    • https://cdn.shopify.com/s/files/1/0436/8809/9993/files/bixby_vision_for_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/hockerill_ofsted_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/7278/1477/files/gorillaz_clint_eastwood_drum_sheet_music.pdf
    • https://static.usrfiles.com/ugd/9374a7_44b0f4fe2a4a472cbeafa7d6bc7f292a.pdf
    • https://static.usrfiles.com/ugd/b0cd75_ce2b2a188e324222bd19fd02939bbd87.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_off00006180.bin
26d0f16ca4c8dbce812c8ff2875bd66b6ad2ce0c1ea3eb7292ce5ea8efc09dad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6180 5332 bytes
font_01_sfnt_off0000738d.bin
5231c5c2d515de8c76aae647d0811591f9528e3117470fefd2396a11cca3f0e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x738D 10332 bytes

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