Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e6e7750161f1049…

MALICIOUS

PDF

77.8 KB Created: 2021-03-28 22:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 0e7532c028dbc1a14183b16d88690ad7 SHA-1: f20654230e554ffadc4c36ad727687ceb4008f71 SHA-256: 5e6e7750161f1049ac1d9f8e4019950b3cdcc17d0f3a31f8e8183c6ba235488a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious intent, including ML classification and ClamAV detection. It also employs a lure to enable macros or editing, a common technique for malware droppers. The presence of numerous external URIs, many hosted on disposable domains, suggests a phishing or credential harvesting attempt, or a distribution point for further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/123?utm_term=cd+cover+template+word+2007 PDF link annotation
    • http://narelavupes.22web.org/sofowivopalanuku.pdfIn PDF document text
    • https://toraboretopupu.weebly.com/uploads/1/3/4/7/134769369/634077.pdfIn PDF document text
    • https://jukonejidar.weebly.com/uploads/1/3/4/8/134876273/9446740.pdfIn PDF document text
    • https://murasujudadalox.weebly.com/uploads/1/3/5/3/135338307/9895501.pdfIn PDF document text
    • https://cdn.sqhk.co/dikizumi/eiamjgQ/13107736692.pdfIn PDF document text
    • http://bawikivogo.22web.org/49806473523.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379613/normal_5ff2baa19ac30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427095/normal_5fc94466cbc26.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/pjdBsjf/tank_feat._ja_rule_race_against_time.pdfIn PDF document text
    • https://cdn.sqhk.co/tawavumazo/d5Z8m84/xeremilofesajubinuma.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/shdPhhK/mods_prison_escape_maps_for_minecraft_pe.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/h2hjhah/summoners_war_wiki_guide.pdfIn PDF document text
    • https://gegadibiliwo.weebly.com/uploads/1/3/1/8/131871883/getopijoterugozisule.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499002/normal_6009447b1f13f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495065/normal_6025e8a43c2cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://walusapo.epizy.com/how_do_i_pay_my_credit_one_over_the_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/faded_piano_sheet_easy_letters.pdfIn PDF document text
    • http://wubazinosimisod.rf.gd/honda_outboard_spare_parts_sydney.pdfIn PDF document text
    • http://siwojanapav.epizy.com/53595709700.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/vabaguj.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/zovofelojeminegej.pdfIn PDF document text
    • http://redusaboj.epizy.com/introduction_to_geographic_information_systems_book.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/easy_build_dog_house_plans.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B9 5204 bytes
SHA-256: 980c9dd17bf67eed292648bec29c34d43727e11a4ef652d86a9ba9744be78a2b
font_01_sfnt_off0000f78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF78D 10620 bytes
SHA-256: f8a1e5a8cbb4c466e53b2b82f5bb5400eb1dba796a2ce9a94ef042cc9d0bb8e8
font_02_sfnt_off00011bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF4 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e