Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab839aa376e663b…

MALICIOUS

PDF

65.4 KB Created: 2021-02-09 06:59:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f05b3122d13d1b10d5890855e49e0887 SHA-1: 39d52e9f6db48a84f588ebed0fb2fd001bb8e178 SHA-256: 8ab839aa376e663b0213435bcc1d4e04e923001b8cf8f0cf67ca4dbc43bd5cd5
186 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/wb?keyword=sophisticated%20lady%20eb%20lead%20sheet PDF link annotation
    • https://cdn.sqhk.co/lojavowi/Mzniagj/74400237581.pdfIn PDF document text
    • https://suxugugufagiwa.weebly.com/uploads/1/3/4/7/134740592/rijefumo-fopadazus.pdfIn PDF document text
    • https://cdn.sqhk.co/tamoravuwera/fIijFff/67166638452.pdfIn PDF document text
    • https://genebametujo.weebly.com/uploads/1/3/4/9/134904617/c5d4b10727444.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/ihfdijj/91090390991.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/dXQkCLf/zupowibugawo.pdfIn PDF document text
    • https://cdn.sqhk.co/fenajobuwer/hhaNgdB/wunasizir.pdfIn PDF document text
    • https://nulixosur.weebly.com/uploads/1/3/4/3/134311840/nofitikegomodud.pdfIn PDF document text
    • https://cdn.sqhk.co/rogenujudita/88icuhG/sirunixe.pdfIn PDF document text
    • https://cdn.sqhk.co/lufezeralon/B1gdDid/nilejuvukex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418367/normal_5fe19225d1056.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/hbERget/time_netspeed_monitor_internet_speed_meter_for_tvs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417312/normal_5fef614c2336b.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/xisakazelelinim/14087940927.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/jisisixagezulazomerelav.pdfIn PDF document text
    • http://nefigubisi.epizy.com/59939226255.pdfIn PDF document text
    • http://webidiwotew.epizy.com/8111934857.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/xemukavajoral.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_off0000c107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC107 5408 bytes
SHA-256: 34417eb3f7d1580629ca04ff9c6548c237cb982128f6efb9f5d558d4ae583e8c
font_01_sfnt_off0000d369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD369 10928 bytes
SHA-256: d85176a953536f55440e3f4b07f7697dd963e29e51f5b22c15d1caf078c86536

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