Malicious PDF — malware analysis report

Static analysis result for SHA-256 12844277df3001b3…

MALICIOUS

PDF

40.4 KB Created: 2020-08-03 02:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: daa23cee091d6d49d4cfa05e42a9de07 SHA-1: 28f4e64bfaf7cc4f429dd5bcfae84b7d82aff511 SHA-256: 12844277df3001b3f0799358f26624ff41fca18c1ee1d19334ebe32e33d9ac6c
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains text related to 'Final Fantasy VII ROM' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous external PDF links further indicates a link farm used for SEO poisoning or distributing malicious content.

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=final+fantasy+vii+rom
    • http://files.pottingwithpotter.com/uploads/1/3/0/7/130738675/96da4a82f0ea.pdf
    • http://files.beyondthemelody.co.uk/uploads/1/3/0/9/130970004/9097382.pdf
    • http://files.sungminrho.com/uploads/1/3/2/7/132710694/xexez_navelidigaw_lenojon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3242/0250/files/79443600567.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdf
    • https://cdn.shopify.com/s/files/1/0428/9911/2095/files/22360252175.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/32349833860.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/nagifukewunevagifotaxixim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/rozikotoxewun.pdf
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/namobewelalagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/kasaju.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/noduzovoganuzokelopuri.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/www._houstontx._gov_courts.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000530e.bin
3b4c7a43399852af03bdf04beab77f81fd417521375f22768ec0b0b5a1fbb752
pdf-font-stream PDF embedded font (sfnt) at offset 0x530E 3732 bytes
font_01_sfnt_off00006068.bin
6f299900f01bdf9368bb4909e56051bf71b0af5d5cf48aa569ae15b8e348bde8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6068 5032 bytes
font_02_sfnt_off00007183.bin
79809224263e153e70d412fd62aa6a47a982a812a6f683fe4cd676d38753d618
pdf-font-stream PDF embedded font (sfnt) at offset 0x7183 10324 bytes