Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9199e2ee7d19899…

MALICIOUS

PDF

72.0 KB Created: 2021-02-15 21:01:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f9b9f1ba5ca6f7e750163aece182d6e6 SHA-1: 5b830d278ea0f9a728fa625e6b0f6c980ecd3e32 SHA-256: b9199e2ee7d19899b93f415453bb153fbceff30f6310fc5e6c9018cd77f7a168
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/wix?keyword=microsoft+word+vocabulary+quizlet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379473/normal_5fcf585f2471a.pdfIn PDF document text
    • http://tradestaroffice.com/completing_the_square_word_problemspiay6.pdfIn PDF document text
    • https://databuzub.weebly.com/uploads/1/3/4/3/134373368/9713063.pdfIn PDF document text
    • http://citruss.space/27026040068bos4t.pdfIn PDF document text
    • http://arm-watch1.club/vegubimatudt3ky.pdfIn PDF document text
    • https://vumamoxaku.weebly.com/uploads/1/3/1/3/131380777/9a907234df68f5.pdfIn PDF document text
    • http://imm-shoes2.club/airbrush_pro_free4do2w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490244/normal_6008a788b2284.pdfIn PDF document text
    • http://lanejaselisipu.22web.org/safenet_luna_hsm_installation_guide.pdfIn PDF document text
    • https://jatupixi.weebly.com/uploads/1/3/1/3/131398141/xozubekozewisixot.pdfIn PDF document text
    • http://optamorem.com/astral_projection_binaural_beatsz69r3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487641/normal_6004f55514f06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zexukojol.rf.gd/hp_laptop_wireless_adapter_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/bbs_2nd_year_result_2075_with_marksheet.pdfIn PDF document text
    • http://koxaxinum.epizy.com/american_dj_mini_fog_machine_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/35141677197.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/digital_photography_course.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/little_monsters_2019_parents_guide.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_off0000dc38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC38 5588 bytes
SHA-256: ae17bfdb7d76f86a020c4a3e9f0c32a16ba4e10aa89abead1207996fbf4d8dcf
font_01_sfnt_off0000ef77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF77 10268 bytes
SHA-256: 3c9536a955e2ac71d753a0f79591c430d9e3c28f124e28422665c2d39dfb8401