Malicious PDF — malware analysis report

Static analysis result for SHA-256 27143e3e76e3ef87…

MALICIOUS

PDF

63.1 KB Created: 2021-02-26 04:52:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5d31592a578c5abb658ddc651929654d SHA-1: 836f9cae8dbf91d096962bf8df91de51467e19b2 SHA-256: 27143e3e76e3ef8774e3591003f59f3527bddb64cd015ba42fcb3f436db4e96d
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://bologen.ru/123?utm_term=reading+comprehension+passages+5th+grade PDF link annotation
    • https://loxazofobel.weebly.com/uploads/1/3/4/2/134265844/pozakodekuv.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/Ffhdjbg/led_control_box_alu_13_12v.pdfIn PDF document text
    • https://pixipemojawipe.weebly.com/uploads/1/3/4/4/134459682/1348741.pdfIn PDF document text
    • https://detalejutapebis.weebly.com/uploads/1/3/4/6/134610814/tezej.pdfIn PDF document text
    • https://cdn.sqhk.co/mudemodox/jQOmqfn/italian_musicians_2019.pdfIn PDF document text
    • http://bisibometixo.mywebcommunity.org/vufaruxupum.pdfIn PDF document text
    • https://cdn.sqhk.co/zokasejiz/idoYnji/semesufibopufumabupos.pdfIn PDF document text
    • https://wibanakipose.weebly.com/uploads/1/3/4/3/134361509/nixitox_dunasuzemip.pdfIn PDF document text
    • https://rajagoka.weebly.com/uploads/1/3/1/4/131406288/zinulu.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/hpLgePg/93397670563.pdfIn PDF document text
    • http://jamotovoxut.mywebcommunity.org/kotosakixemebozajexe.pdfIn PDF document text
    • https://lemorixumo.weebly.com/uploads/1/3/4/7/134748879/xoran-lubeludoju.pdfIn PDF document text
    • http://creditscorefix.info/taoist_sacred_texts1e56p.pdfIn PDF document text
    • https://cdn.sqhk.co/pumafuki/aIiaXDF/32228955638.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pivimufe.atwebpages.com/jutinexowub.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_off0000bc03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC03 5588 bytes
SHA-256: a9a7621ef06269659b81d250589e7f5f0d479df095ded93cb68ef0cd74fb46b2
font_01_sfnt_off0000cee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE2 9572 bytes
SHA-256: 80927c88003342606e1e0f6c6d99105e38aca17cd50fa1681eb758dc75c3bf7c