Malicious PDF — malware analysis report

Static analysis result for SHA-256 d370a8b520a72264…

MALICIOUS

PDF

72.1 KB Created: 2021-03-03 12:00:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dc3977b9ee24cdd2875c7f8f7d58f147 SHA-1: 97e10119e4cc3393fbbad5c1005bec795386f5c3 SHA-256: d370a8b520a7226416c07bae42ff55e2603b5bd6ae970b50dac29333c2b2b1f0
166 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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://gimoguvi.ru/award?keyword=canon+ds126+291 PDF link annotation
    • http://wijetaz.mypressonline.com/fufumuxadisatuj.pdfIn PDF document text
    • https://zikixitifo.weebly.com/uploads/1/3/4/8/134897390/3808452.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/dell_optiplex_9010_cpu_i7.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/suvujeralugar.pdfIn PDF document text
    • https://puxezemugip.weebly.com/uploads/1/3/4/3/134311794/2427200.pdfIn PDF document text
    • http://instgrmmverifiedbadge.com/noxurobubukafokokoqqnl.pdfIn PDF document text
    • https://sazezikamujut.weebly.com/uploads/1/3/1/4/131438312/6247528.pdfIn PDF document text
    • http://wopafopu.22web.org/cakewalk_sonar_full.pdfIn PDF document text
    • http://managerprogram.live/pew_pew_madafakas_cat_mugfk5f3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://relivoziz.atwebpages.com/cognitive_milestones_for_18_to_24_months.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/bergey_s_manual_9th_edition_ebook.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/sharepoint_2013_video_tutorial_free_download.pdfIn PDF document text
    • http://fuvimexapa.rf.gd/47240483242.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/civic_hybrid_battery_location.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/pisorugedonor.pdfIn PDF document text
    • http://pitikepaz.epizy.com/stephen_king_movies_the_stand.pdfIn PDF document text
    • http://sulijugofogim.onlinewebshop.net/durafejasarapida.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_off0000dc5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5A 5092 bytes
SHA-256: 108ba7b37e0ecfd50bf6f15b7e4f3d2454bbed356ce2d08d4660b0c6bdb298bb
font_01_sfnt_off0000edb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB9 11580 bytes
SHA-256: 0b801d9307f1ab316347563c9f20285da8ab752db8e56107e858abf2c80ae97a