Malicious PDF — malware analysis report

Static analysis result for SHA-256 b299116c5ded62ad…

MALICIOUS

PDF

66.5 KB Created: 2021-02-15 15:25:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ede69819e7e8a8e53695d06455357461 SHA-1: f5eb37d787be9aa6ae4f4374bb9a1d5df68c91dd SHA-256: b299116c5ded62ad58de05cf143e2c432f83d2252add73016bfaee79eeeedfe9
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://seumenha.ru/wb?keyword=killing%20floor%202%20gameplay%20single%20player PDF link annotation
    • https://cdn.sqhk.co/savunowudob/haoijk3/vukufijatonar.pdfIn PDF document text
    • https://pasifoberili.weebly.com/uploads/1/3/4/8/134881239/8763720.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370072/normal_60026590d3263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_600f25f50478b.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/jjKgfid/rixebapiz.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/C1CX6jf/99103726840.pdfIn PDF document text
    • https://cdn.sqhk.co/xogixute/n2q9heK/top_100_djs_virtual_festival.pdfIn PDF document text
    • https://waperaterorug.weebly.com/uploads/1/3/0/9/130969933/6784466.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416928/normal_5feb32d39f283.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417643/normal_5ffc63390999a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494436/normal_601d95d5c5eae.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/jeromopelurab/34246821055.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/ark_broodmother_gamma_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/77026875615.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/borafuvifupebewosaw.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_off0000c516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC516 5424 bytes
SHA-256: 73534459abc2098416010507d6b16f3d8765160e3a2c9851ad89441d1ee4de91
font_01_sfnt_off0000d787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD787 10972 bytes
SHA-256: 75ad3d5a6e54e381104062b3000e411c598cb49d0162997a52c6d024d385f4a9