Malicious PDF — malware analysis report

Static analysis result for SHA-256 898c5545572cfd3f…

MALICIOUS

PDF

68.0 KB Created: 2021-01-24 10:18:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 33064c84bbefa49f30cbf1a37dc7f0e6 SHA-1: f07fd4b11c15a01bc74541155097d85291ea8fe5 SHA-256: 898c5545572cfd3f512775c72b358797349e8f4be6011bbf9ca30c8fb6be62ee
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/aws?utm_term=free+editable+typography+templates PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446388/normal_5fe880ac20cee.pdfIn PDF document text
    • http://nagajavanof.22web.org/acrobat_reader_android.pdfIn PDF document text
    • https://lugumeduzox.weebly.com/uploads/1/3/0/7/130740149/jovivoziseju.pdfIn PDF document text
    • https://kerobasoxegetun.weebly.com/uploads/1/3/4/0/134017970/5948008.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530323/normal_6005dc957fba9.pdfIn PDF document text
    • http://fepotarugagi.22web.org/zusavezala.pdfIn PDF document text
    • https://lefelovavuj.weebly.com/uploads/1/3/4/6/134644752/jijimufowerow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474998/normal_5fe3d61ac755b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dukiduzafenej.epizy.com/roxezitemedim.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/android_tablet_reviews_2018.pdfIn PDF document text
    • http://malinaliwul.epizy.com/6905963121.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/boliyan_jordan_sandhu_video_song.pdfIn PDF document text
    • http://zusewijoje.epizy.com/archery_game_hack.pdfIn PDF document text
    • http://wojotefeva.rf.gd/61742448662.pdfIn PDF document text
    • http://giwofigu.epizy.com/8989194941.pdfIn PDF document text
    • http://bajipelorisu.rf.gd/web_browsing_history_on_android_phone.pdfIn PDF document text
    • http://potefedezazox.rf.gd/videwa.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/kovelusaxoxus.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_off0000cbd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD3 5568 bytes
SHA-256: 0b2bd97db00c396e97e1b30a8613ea6e0e53bea381581bdeadbad7e45938e396
font_01_sfnt_off0000de9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9D 10796 bytes
SHA-256: ddff77122a989e408f89090bc02787120d3d2171b2491f39118357aadfc27aa4