Malicious PDF — malware analysis report

Static analysis result for SHA-256 d99f2e1fcd1f18b5…

MALICIOUS

PDF

75.4 KB Created: 2021-03-04 19:09:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4de8d6c2131e5d860e668dcfd53c9a4c SHA-1: 6b451b756e5ba6b3e89c3ad3b2bb00c602e7e5c4 SHA-256: d99f2e1fcd1f18b574233b9518a9272f6cfb6555a0acc3994ab94cceac114f7a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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 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://nipisod.ru/123?utm_term=different+types+of+gears+and+their+uses PDF link annotation
    • http://discount50.pro/pupuzotewironudajevelxbbry.pdfIn PDF document text
    • https://mamufitixiru.weebly.com/uploads/1/3/4/6/134640278/1262566aa0.pdfIn PDF document text
    • http://wspring.space/xezewuwepunodugol7y41v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417536/normal_5fcc18df32f14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412387/normal_5fea19571e684.pdfIn PDF document text
    • http://drive4mclaneaustell.com/lg_mobile_switchvklm4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417664/normal_5fe302d8a02a4.pdfIn PDF document text
    • http://becloud.website/49870701798krm82.pdfIn PDF document text
    • https://gavuzidawosowek.weebly.com/uploads/1/3/1/4/131413418/86f486877ac53ee.pdfIn PDF document text
    • http://arthromedro.xyz/38236622342h21ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428341/normal_60323c165ceba.pdfIn PDF document text
    • http://frut-tree.site/mortal_instruments_tv_show_reviewkbot3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382405/normal_5fe36586aeee1.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/nelusogulazodaj.pdfIn PDF document text
    • https://lepebixetuvenal.weebly.com/uploads/1/3/4/6/134634058/jofux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c2e0e2-abdf-4e86-bc89-cd762e8b72a1/tatenasagu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78496e12-fb32-458e-92c3-d549b92e31d0/what_caused_absolutism_in_france.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/625985b7-8377-46bf-8e63-b70f6f1e98ce/watch_the_count_of_monte_cristo_movie_2002_online_free.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_off0000ea21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA21 5372 bytes
SHA-256: 5fe04d68a297584fc90a46b726698efcc0e0060113a4dbc79f31f0bb64aab92b
font_01_sfnt_off0000fc76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC76 10508 bytes
SHA-256: ba41cf03b4339a6805acf95b02a31af15fd729f630074b498af07a65aba3eeb6