Malicious PDF — malware analysis report

Static analysis result for SHA-256 b013bf9dd9bd0682…

MALICIOUS

PDF

40.7 KB Created: 2020-08-17 08:58:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 052649126e71603f5ea7a1f37d11136d SHA-1: deb60c16282a210c10b0dcd8c7ab9a7970662ab6 SHA-256: b013bf9dd9bd0682ce24f4b2ec4dc89be60fc72b089d2573d12943f868c36397
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but also includes a critical link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=animation+video+editor+software+free'. This suggests a social engineering lure, likely attempting to trick the user into clicking the link under the guise of providing software information. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=animation+video+editor+software+free
    • http://sonepusug.shawlegalservices.com/uploads/1/3/0/7/130776407/a13a192c4.pdf
    • http://tokibubiw.kingstreetbeer.ca/uploads/1/3/0/7/130740558/sotulufebixuvusuf.pdf
    • http://vinuf.dpaulart.com/uploads/1/3/1/1/131164250/7437611.pdf
    • http://samumov.ugsoalocal18.com/uploads/1/3/2/7/132740405/pazumabozuriruvid.pdf
    • http://files.bigorangegraphics.com/uploads/1/3/1/6/131637169/tufutopekowogupaked.pdf
    • https://cdn.shopify.com/s/files/1/0437/3331/9831/files/gta_v_best_bunker_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/3874/4476/files/36180167728.pdf
    • https://cdn.shopify.com/s/files/1/0429/9892/3427/files/99124884711.pdf
    • https://cdn.shopify.com/s/files/1/0432/4402/8068/files/pimorag.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/blank_monthly_calendar_printable.pdf
    • https://cdn.shopify.com/s/files/1/0447/8690/9341/files/energia_eolica_libros.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/niborazewesaponovabumig.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0861/files/livokupe.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/tomonewe.pdf
    • https://cdn.shopify.com/s/files/1/0435/5240/7704/files/author_s_tone_worksheet_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0450/0927/2990/files/mefize.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_off000061f0.bin
3e85b6773ac303d5b2d52cbec4e1de48888eb30dd541320d20e4cdd0fed3b09c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F0 5164 bytes
font_01_sfnt_off00007372.bin
5e56ec373c95248271894c648ce037941dba0ab4776ef22b37a1e91f94ae81ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7372 10040 bytes

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