Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e92e5f55bfc75a…

MALICIOUS

PDF

65.8 KB Created: 2021-03-04 05:46:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e264796493d2f0222ada0b9a4c8a6528 SHA-1: 8b8f90b7351f170a5882672bc72cdabe3e4af79c SHA-256: 64e92e5f55bfc75a03a0bb087c93aa86df184fbced07036669c12cb4252348b3
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://lozipotod.ru/award?keyword=taco+bell+power+bowl+chicken+carbs PDF link annotation
    • https://mibubibot.weebly.com/uploads/1/3/1/8/131871690/rituxa-nopelofakuj.pdfIn PDF document text
    • http://differencecheats.net/optical_fiber_communication_bookzd2z0.pdfIn PDF document text
    • https://dibevapanowodi.weebly.com/uploads/1/3/0/7/130776811/256534863c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378164/normal_6028064707012.pdfIn PDF document text
    • http://topuniversityru.fun/691545300289w6sa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_603585d691024.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405206/normal_601d159cdc9df.pdfIn PDF document text
    • http://wurogutevifo.iblogger.org/97195889513.pdfIn PDF document text
    • http://wojifos.22web.org/sony_bravia_android_tv_apps.pdfIn PDF document text
    • http://websporizle4.com/is_blackberry_keyone_still_supportedgfy0t.pdfIn PDF document text
    • https://vinadesafabav.weebly.com/uploads/1/3/5/3/135305522/9fb0ae9079fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505820/normal_600193999836a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377925/normal_5fe2449f7642a.pdfIn PDF document text
    • http://neo-tp.ru/42031588658l441i.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/jarawaxanivu/wematubevizilikidetik.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/20573049597.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/rainstorm_meaning_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/9411595962.pdfIn PDF document text
    • http://watidoterer.epizy.com/run_android_emulator_mac_os.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/how_to_use_time_capsule_in_wechat.pdfIn PDF document text
    • http://fibobaxemod.rf.gd/vilupikufopixugadoreja.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_off0000c63f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC63F 5268 bytes
SHA-256: a5761acc425734f85a1ee7fe58fbdc1a94810a9a582839c5006d10efc7fe8d60
font_01_sfnt_off0000d82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82C 9888 bytes
SHA-256: 9469badbb36007d72a4aceb189ea553c13c19e103de7705b2b9a59331c3c71ec

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