Malicious PDF — malware analysis report

Static analysis result for SHA-256 256baebd52bc29e2…

MALICIOUS

PDF

72.9 KB Created: 2021-02-24 04:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 55853e6261b343a527e1fd50be441276 SHA-1: 28c6404d27ba5f84760a7a2bad4f2dfba6cef792 SHA-256: 256baebd52bc29e2fd380413848fe664ef3845044b425a588c42ae6e3cc0993f
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://druttle.ru/wix?keyword=fantech+dbf+110+manual PDF link annotation
    • http://busivel.xyz/what_is_the_role_of_linker_and_loader_in_compilationwwxrp.pdfIn PDF document text
    • http://national-verifyteam.com/nixon_regulus_owners_manualdid9v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449629/normal_5feafee1ba632.pdfIn PDF document text
    • http://cupe1.ru/king_kutter_tiller_specificationsri6xy.pdfIn PDF document text
    • http://nosinoski.shop/analisis_y_diseo_de_sistemasfa8s7.pdfIn PDF document text
    • https://xaleratugigajij.weebly.com/uploads/1/3/4/6/134631249/bukokujamakinevoxuka.pdfIn PDF document text
    • http://lastasked.com/vopowedafamuxovamuk0cubc.pdfIn PDF document text
    • https://kowulenube.weebly.com/uploads/1/3/2/7/132740682/3850824600.pdfIn PDF document text
    • https://modevibivuruwix.weebly.com/uploads/1/3/1/4/131406629/199237.pdfIn PDF document text
    • https://luragelekow.weebly.com/uploads/1/3/4/3/134377287/3c8017e.pdfIn PDF document text
    • http://mydenverneighborhoods.com/honeyguide_ranger_camp_waterbergg0ysn.pdfIn PDF document text
    • https://befunopokoxa.weebly.com/uploads/1/3/5/3/135327779/zixevituwire.pdfIn PDF document text
    • http://subbellassecret.com/68513310377jz0qn.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD09 5276 bytes
SHA-256: f5cc42f16120c9a6af425d171dec1e522db0981784935f9f124a7ef7b0d4005c
font_01_sfnt_off0000dedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDB 10184 bytes
SHA-256: 824e419d9de4a773ac6e7c193b2a2dbfe97e49fbd30bae32af69b100a0d7546f
font_02_sfnt_off000101b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B4 16092 bytes
SHA-256: 4d34b729cd27449460e0a4cb10fd9b82f83ff2e24000bb4c65157dc9f2b0e44a