Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73be197aedb0f2f…

MALICIOUS

PDF

74.2 KB Created: 2021-02-18 05:54:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fcc40258c89b2f0c40f402f783221cfe SHA-1: 2cf2209635b3d8dba7c1f5d46377410708f3d7a7 SHA-256: e73be197aedb0f2f4c153c4ac4916287ee5382ff502c435f43a04bfb4e0674e9
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://jottigo.ru/wb?keyword=roland%20v-4ex%20firmware%20update PDF link annotation
    • https://sugodaxekot.weebly.com/uploads/1/3/1/8/131872070/8790127.pdfIn PDF document text
    • http://sobakin.space/modutuzupupem4q98.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/d1sJZha/short_inspirational_life_mottos.pdfIn PDF document text
    • https://tidopotixasajev.weebly.com/uploads/1/3/0/7/130738881/89b2c7fd62.pdfIn PDF document text
    • http://sweetygirl.club/xodibojulido6wn.pdfIn PDF document text
    • https://ruvararet.weebly.com/uploads/1/3/1/3/131398095/losora.pdfIn PDF document text
    • https://cdn.sqhk.co/kemomonil/Ohen2ij/44424784113.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452865/normal_6005cba090a21.pdfIn PDF document text
    • https://mutalexo.weebly.com/uploads/1/3/1/8/131871787/a9fe3ceea677a2.pdfIn PDF document text
    • https://daxexamuve.weebly.com/uploads/1/3/4/4/134446800/4726572.pdfIn PDF document text
    • http://ogranicbio.space/mokozasikamcn0c3.pdfIn PDF document text
    • https://cdn.sqhk.co/juvanejejuwo/c9jg9ib/42752721392.pdfIn PDF document text
    • https://nokajavu.weebly.com/uploads/1/3/0/9/130969653/5373485.pdfIn PDF document text
    • https://pudasebedizut.weebly.com/uploads/1/3/4/5/134587980/6ba9e05e1.pdfIn PDF document text
    • http://gayerkan.com/kuvogarupibotp10ng.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE523 5356 bytes
SHA-256: b22d4a997f8664ec074737aa09a37c5251f8b07ad6cf97739187032a3edaa72a
font_01_sfnt_off0000f773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF773 10768 bytes
SHA-256: 29f9e0e620ebbe5b90b50c7922692fcb8888fc393120f13ab789d2a8a78e22b1