Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd5b8f7eac6d16a…

MALICIOUS

PDF

83.8 KB Created: 2021-03-17 04:19:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4c4dd03dc108db2d25c4abb358c1efba SHA-1: a0b972caa801f47a3ce4b204c8020ae725453042 SHA-256: 2dd5b8f7eac6d16af33e937e5676bf23a2adbae998b3eb74ffb286bada2464e7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the structure and URL patterns suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://druttle.ru/strik?utm_term=2020+bobcat+t770+price PDF link annotation
    • https://wesaxewotivaf.weebly.com/uploads/1/3/4/5/134578523/8e958.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384045/normal_603a7c2b51a1e.pdfIn PDF document text
    • https://bupedokan.weebly.com/uploads/1/3/1/6/131607930/d126e3fd1485dd3.pdfIn PDF document text
    • https://jazigibebegada.weebly.com/uploads/1/3/1/6/131606339/02c1600cfd412.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366047/normal_5fef57e2dec09.pdfIn PDF document text
    • http://nokirixako.iblogger.org/block_story_warcraft_mod_apk.pdfIn PDF document text
    • https://febadezupuwile.weebly.com/uploads/1/3/1/0/131071278/rabamesi.pdfIn PDF document text
    • https://cdn.sqhk.co/sifalavuxozo/ibCgdie/recharge_nepal_ncell_from_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/zivudasexoni/PqVCtjj/vagafe.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
    • https://uploads.strikinglycdn.com/files/d7a3f283-c6bf-492c-a8e6-f8cef854eb9d/will_there_be_a_season_3_for_big_little_lies.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/79862181070.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/dipalawobipufawovagipubib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d22ef98c-8361-4495-aca2-1e97224e46ea/reading_comprehension_bookmarks_for_parents.pdfIn PDF document text
    • http://pakebixulo.epizy.com/unabomber_manifesto_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c5f3d40-0378-4eb9-a9df-ec0df1d705cd/what_is_the_age_limit_for_joining_the_air_force_reserves.pdfIn PDF document text
    • http://tunarijog.rf.gd/nojagikidudozefatufutexa.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/45703319861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43b47d82-0545-4e33-82f3-926b27315c09/honda_civic_2012_service_manual_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/bismillah_karan_punjabi_song.pdfIn PDF document text
    • http://moroxite.epizy.com/android_version_pixel_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5096eb0-b169-41be-bc06-a0557cb95071/kebakopes.pdfIn PDF document text
    • http://foripoj.epizy.com/49400175586.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_off0000fbb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB1 4800 bytes
SHA-256: db5ea2fe8b4dcf9f72bfdbe6a3cea220805b249e722c5fcee4c327340d8605b5
font_01_sfnt_off00010c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C00 11712 bytes
SHA-256: a1d0844b3864d42e098f1e16e501af3a8da1c582051fa1bcfeff0f3064b62bee
font_02_sfnt_off000133e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133E6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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