Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14793e4e2379471…

MALICIOUS

PDF

85.1 KB Created: 2021-03-03 06:01:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33156f7402fd9298bf4724c71d09cc46 SHA-1: e90bde3ccb33f43d81ff190179bb9dce745cbd3e SHA-256: d14793e4e2379471c4d0b842a46eee82b951886134a81f07a25c2570633b07dc
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with the primary URL suggesting a lure related to 'Sims 4 mods'. ClamAV and ML classifiers strongly indicate maliciousness, specifically classifying it as a phishing trojan. The presence of embedded URLs and the link farm structure suggest the document's purpose is to redirect users to malicious sites for payload delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://ponafet.ru/123?utm_term=sims+4+december+2020+broken+mods
    • http://haustova.com/wf_2630_epson_scaneo5kf.pdf
    • https://cdn.sqhk.co/ratosakip/ijidXhj/40692883650.pdf
    • http://hihikane.space/relagukisusiza7mdhk.pdf
    • https://zukafetovozod.weebly.com/uploads/1/3/1/6/131636890/167b98eeff7.pdf
    • https://fajasorefasox.weebly.com/uploads/1/3/4/3/134348900/dikedakojurar.pdf
    • https://tivepikilusu.weebly.com/uploads/1/3/4/7/134759048/8526204.pdf
    • http://magnitoli-2ekran.site/newblue_transitions_3_ultimate_crackceec2.pdf
    • https://cdn.sqhk.co/defisepeniba/bHGBjew/segomaf.pdf
    • https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/tinovodumojug_komajaf.pdf
    • https://medivurufif.weebly.com/uploads/1/3/1/4/131407406/525357.pdf
    • https://duzigolanulemo.weebly.com/uploads/1/3/2/6/132680867/8194261.pdf
    • https://kafomepavazepa.weebly.com/uploads/1/3/1/4/131409794/401e524a.pdf
    • https://cdn.sqhk.co/lupokuna/a6TwzPg/world_of_darkness_werewolf_the_forsaken.pdf
    • https://cdn.sqhk.co/bozawenibiwa/gejfia1/26520678321.pdf
    • https://cdn.sqhk.co/kisasizaro/kifheha/masha_e_o_urso_brinquedo.pdf
    • https://pevusipifo.weebly.com/uploads/1/3/4/8/134863194/efdd9f7c6f4d76.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mafizili.epizy.com/does_globalization_affect_intercultural_communication_and_why.pdf
    • http://wexereza.rf.gd/bournes_green_ofsted_report.pdf
    • http://wupebixa.epizy.com/current_resistance_and_electromotive_force_worksheet.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb54.bin
0aa08705e943f1fd1f9ac38d87e4ccf1bfb8c223c8f84827cdb632dfe48258d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB54 5512 bytes
font_01_sfnt_off0000fdff.bin
c58734b7c43f876d00250fe79027c28030c899bcb97b97a165465ed91b27eb93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFF 2744 bytes
font_02_sfnt_off000109a9.bin
ae7145b7d4766b0b57ec1b125ded4e414c90fb18e01915e4ca324cbb12e6f479		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109A9 10988 bytes
font_03_sfnt_off00012f4a.bin
12aba8d421747cc7b6f64e0779b2b7b17ec51a7e5f572de6077b2104e12ed3a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F4A 16336 bytes

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