Malicious PDF — malware analysis report

Static analysis result for SHA-256 e620c0b9514a0617…

MALICIOUS

PDF

61.8 KB Created: 2021-01-31 02:08:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a2d24afc207f2f228fb07851c0b676dc SHA-1: 9debe44c6382099598767d45f2c1c64a36b2de76 SHA-256: e620c0b9514a0617fffca22f1cff092793adc8a48f3ad658220fb0f4a00cf67d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=financial+report+business+definition PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4479932/normal_5ff406bd128e9.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/ewigid9/proguides_valorant_crosshair.pdfIn PDF document text
    • https://kavosimodo.weebly.com/uploads/1/3/4/9/134901779/2004162.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_600a51d69e828.pdfIn PDF document text
    • https://kolokizegilo.weebly.com/uploads/1/3/4/3/134370221/repuxamivev.pdfIn PDF document text
    • https://mepodatadun.weebly.com/uploads/1/3/1/4/131452799/votilulobibego.pdfIn PDF document text
    • https://nuvipepive.weebly.com/uploads/1/3/1/4/131409498/bijegepevak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490380/normal_5ff0e11090d32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368975/normal_5feb1cdd6ff34.pdfIn PDF document text
    • https://kurenilomu.weebly.com/uploads/1/3/4/0/134042522/9108147.pdfIn PDF document text
    • https://numetoximo.weebly.com/uploads/1/3/4/7/134717633/lonijotomisebu_womazif_kezopi.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/nufidibodudulad/bericht_schreiben_bung.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/xikulim.pdfIn PDF document text
    • http://wiwekire.epizy.com/bikesak.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/android_auto_compatible_stereos.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_off0000b7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7E9 5244 bytes
SHA-256: 4dc146a3ec093fa0ba34a1a6afe0492e5ffd754d39edfb6626e73954d50a34b8
font_01_sfnt_off0000c9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C1 9688 bytes
SHA-256: 7142eeebef6757e6b510a8f7ca97051cf7714b7b9fe68027b740f2baf5194131