Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df5e19032c835b1…

MALICIOUS

PDF

72.4 KB Created: 2021-02-21 09:42:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 949757e46c461e2630b787f258fe77a4 SHA-1: 7ef72cd1132f33e09496cc86a4e97ba0d2fe556c SHA-256: 0df5e19032c835b1f7c2f4e21e5628b98782e0c65aa11bc5acfcf5d9869bb5b5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=psychsim+5+computer+therapist+answer+key PDF link annotation
    • https://tusidotug.weebly.com/uploads/1/3/4/4/134482214/3832141.pdfIn PDF document text
    • https://fusajebotiv.weebly.com/uploads/1/3/4/3/134320253/vudexalagarolus.pdfIn PDF document text
    • https://jiparebifipi.weebly.com/uploads/1/3/4/6/134638028/juzetef.pdfIn PDF document text
    • https://luxovifawus.weebly.com/uploads/1/3/4/3/134341193/844815.pdfIn PDF document text
    • https://tejukikefuxod.weebly.com/uploads/1/3/4/7/134703803/fozovunawubi-ruwuziwikafelek-begetiteg-fonivejuzo.pdfIn PDF document text
    • https://lokawinopigu.weebly.com/uploads/1/3/2/7/132712062/rulibobugukolafawi.pdfIn PDF document text
    • https://cdn.sqhk.co/kelufuro/gifijgg/tips_for_among_us_pc.pdfIn PDF document text
    • https://botabire.weebly.com/uploads/1/3/4/6/134629411/2798d27b7ad.pdfIn PDF document text
    • https://cdn.sqhk.co/nupopobax/idjbdhg/jijaworukojupilafokigo.pdfIn PDF document text
    • https://sepuvoguzunisam.weebly.com/uploads/1/3/4/4/134488558/depidajusifumosapapi.pdfIn PDF document text
    • https://cdn.sqhk.co/vosiwuli/Rc1Ahav/wemivulafinuti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kizugokofo/xeminesosisukuxonadisujag.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/11640089772.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/35503265252.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/orthographic_projection_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/zubolol.pdfIn PDF document text
    • http://pudedenos.epizy.com/sapomigajuw.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/47456581625.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/32412012086.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E9 5408 bytes
SHA-256: b0bf7f9b87dbdb478f4b385a4f32a41527309880f75a952c4af531f11386588d
font_01_sfnt_off0000e334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE334 10284 bytes
SHA-256: ba91e414033fa56879a6d4260595458d542cc53d0322fbcf537812673750779e
font_02_sfnt_off0001064a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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