Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c2a99edaad1068e…

MALICIOUS

PDF

74.9 KB Created: 2021-01-30 07:43:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dff2a92049bfc5feb8f5ee127e1e557e SHA-1: 654fd09ddcdecb06134bcafda3473ed147d65847 SHA-256: 9c2a99edaad1068e61f2e5c5b39837202510897fceebd2916f054d9eb47daf66
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffmen.ru/wb?keyword=fall%20guys%20ultimate%20knockout%20ps4%20controls In PDF document text
    • https://zaxixeresez.weebly.com/uploads/1/3/1/8/131871416/ed72a0e62c0831.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379217/normal_60129b6c223d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5feaeee90a1a1.pdfIn PDF document text
    • http://vidclips.design/stickman_legend_of_survivalxrmbb.pdfIn PDF document text
    • https://kojaxinepizoju.weebly.com/uploads/1/3/1/8/131856409/502332.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380522/normal_5fcbd2a1f26b5.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/9_months_game_hack_ios7qx4b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403805/normal_5fe161e32694a.pdfIn PDF document text
    • http://remontlegko.info/devi_kavachamcc0o4.pdfIn PDF document text
    • https://tibefuwejar.weebly.com/uploads/1/3/4/3/134332688/kuraxavokowelul_fidalazu_fowav_vakutitamejoro.pdfIn PDF document text
    • http://experiment.website/portugus_para_estrangeiros_download64h11.pdfIn PDF document text
    • https://wogalipa.weebly.com/uploads/1/3/4/3/134316604/fakikijunibot-judigenawi-vaziguxosizube-voxuwonati.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/maharashtra_government_7th_pay_commission_report.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/70648582480.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/sevokudodazeriwade.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/labixokeranemokuwulofi.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/zodozedupimidipikikemupif.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/wuwuzapu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3ED 5460 bytes
SHA-256: e0f9eac5d7d9b65e0045f0cb59844ca5d47d105e24c984a522d9568a0f1bde44
font_01_sfnt_off0000f68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68A 12408 bytes
SHA-256: 9ec82b560d90bc7eca70310615709dba82015ef1d67352f4edeb37330c465de4

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