Malicious PDF — malware analysis report

Static analysis result for SHA-256 a00c8615012148a2…

MALICIOUS

PDF

67.4 KB Created: 2021-02-16 01:05:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1b86b0e2471c00829c0f8c8b17e2d70c SHA-1: 7a69d53fe80258d9d8e3fd54e7babb5f96f54e31 SHA-256: a00c8615012148a2aacee9b692f8fda2cb816bc282de475faae491852cf6539f
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=citizen%20skyhawk%20blue%20angels%20setting%20instructions PDF link annotation
    • https://cdn.sqhk.co/luwibajik/tvidaDL/tirewiwime.pdfIn PDF document text
    • https://cdn.sqhk.co/jafakitiw/Yjhjhg6/risazinixari.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/erQDhf6/darepopot.pdfIn PDF document text
    • https://cdn.sqhk.co/nanijamu/ibfhjj9/feboponaf.pdfIn PDF document text
    • https://pobubejafak.weebly.com/uploads/1/3/5/3/135314602/rijofafanu.pdfIn PDF document text
    • https://golisarupu.weebly.com/uploads/1/3/5/3/135317681/kedinopila-gopomereguboki-vugalesopen.pdfIn PDF document text
    • https://tixasenuwafoja.weebly.com/uploads/1/3/4/6/134658158/5535559.pdfIn PDF document text
    • https://cdn.sqhk.co/jenotonolo/9icNsgc/gowoxazoza.pdfIn PDF document text
    • https://jisixeda.weebly.com/uploads/1/3/1/4/131409884/600181.pdfIn PDF document text
    • https://tovibebifenoge.weebly.com/uploads/1/3/2/6/132695438/janufuzozeder-perenolawodoron.pdfIn PDF document text
    • https://vexinafofonazes.weebly.com/uploads/1/3/1/8/131871992/gulonasofudek-gejem-tubiloxejupo-jusajanegotom.pdfIn PDF document text
    • https://cdn.sqhk.co/zodunoxurob/86bgie0/bezepunodenojugi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vugikalijuboxo.epizy.com/cisco_nexus_9300-_ex_configuration_guide.pdfIn PDF document text
    • http://misiwoferejisuj.rf.gd/kosupogizeragi.pdfIn PDF document text
    • http://wokobudedisete.rf.gd/apache_directory_studio.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_off0000cbba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBA 5412 bytes
SHA-256: 593e3eaf9266369ee9234062b7fc89e08f476e82d7c6d44d0e091dbb83910e31
font_01_sfnt_off0000de43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE43 10024 bytes
SHA-256: 94e1a5f9f100d1252883cfcb59ca0066b4c8c6f5d461f19369229f5dc3696621