Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e36fd6c962d17e…

MALICIOUS

PDF

83.1 KB Created: 2021-04-03 00:06:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cea8f95b7c47650bf7addc715cf9f3e3 SHA-1: 45d4d041f162158e5f804917f8e4b53b2f267885 SHA-256: 62e36fd6c962d17ea23cdfc9fb305a33a7d4207ab25897a1e4ead86cef482179
126 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with a high concentration of them pointing to disposable or suspicious domains, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to a malicious site for further exploitation. No scripts were extracted, but the presence of numerous external links and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' point to a malicious redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://fokemale.ru/strik?utm_term=tecnicas+e+instrumentos+de+recoleccion+de+datos+segun+arias
    • http://fuwajigub.iblogger.org/economies_of_scale_occur_when_a_firms_long-run_average_total_cost_curve_is.pdf
    • https://cdn-cms.f-static.net/uploads/4413011/normal_602f466fe71d8.pdf
    • https://static.s123-cdn-static.com/uploads/4409393/normal_5ff618ae9538a.pdf
    • https://cdn-cms.f-static.net/uploads/4467298/normal_6040007429684.pdf
    • http://begetus11ppz.xyz/cvru_iode_programme_guide6l4en.pdf
    • http://blue-tick-central.com/epson_wf_2630_ink_officeworksnhtl6.pdf
    • http://bachanalytics.com/12991998319krnzs.pdf
    • http://nenotuwafuxigot.22web.org/minn_kota_trolling_motor_troubleshooting_guide.pdf
    • http://lojotiwutorolad.22web.org/gijojonedemivogepa.pdf
    • https://cdn-cms.f-static.net/uploads/4451019/normal_602b54643b289.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://0443db59-9f9d-4031-b786-8a5723798135.filesusr.com/ugd/ab62d6_6256a5665e014c6da6b57c56c3ce4867.pdf?index=true
    • http://pafiposozow.rf.gd/50554905955.pdf
    • http://bozulilem.epizy.com/benim_hocam_ders_notlar_2020.pdf
    • http://dosusixajamatef.rf.gd/xogiwoselusa.pdf
    • https://uploads.strikinglycdn.com/files/068e33ad-c1fc-4025-b2cd-cb9d01c5b1ac/28255876511.pdf
    • https://uploads.strikinglycdn.com/files/fd53cd21-4ae2-4b89-8767-f468fef67e06/83895083990.pdf
    • https://uploads.strikinglycdn.com/files/6ff88e2d-3618-4abc-be4e-b81287857087/tyrolia_adrenalin_14_review.pdf
    • http://panejolaraluka.rf.gd/lepabakumodikusajeba.pdf
    • http://variwud.rf.gd/bauordnung_bayern.pdf
    • https://uploads.strikinglycdn.com/files/68e956cd-df3a-4279-9119-e0930573722c/crossover_cable_color_code.pdf
    • https://a539eca0-ed6d-4e39-a9fd-63162facd464.filesusr.com/ugd/8170ee_3370e13d99864d629c61c16a36ccedd0.pdf?index=true
    • http://defefefesid.rf.gd/ginuzetivemogepiwe.pdf
    • http://gomilivif.epizy.com/73310035498.pdf
    • https://52468903-0e2d-47c5-babb-61e1d305d291.filesusr.com/ugd/32777b_636778c8366646aa900743c692fee450.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f68b.bin
5a3fb700f9414934ebc1edb0275d3ac7856c4d63c6ba59a8155ecadaab63013c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF68B 5088 bytes
font_01_sfnt_off000107b5.bin
82c4f6215dc3bbed7dd237a702d213bccd81d68177c5010ac9e8c4b091b56572		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107B5 11764 bytes
font_02_sfnt_off00012e1a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E1A 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.