Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2939cc0fc367f9f…

MALICIOUS

PDF

75.5 KB Created: 2021-03-29 12:58:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: d8bb353a93ba7cff8d071fb9afb3d0a1 SHA-1: 60a441cfb6698ec12583a0da3b9a4b59b0d8f4cb SHA-256: a2939cc0fc367f9fcbe1c2f2583cfd4bd98353fa96bcc491fc524e8adbf70d5e
126 Risk Score

Malware Insights

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

The PDF file contains numerous external URIs, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or a trojan. The embedded URLs suggest an attempt to redirect the user to malicious content or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/wix?keyword=radiance+grace+draven+pdf+download+free PDF link annotation
    • https://manumuxalobo.weebly.com/uploads/1/3/5/3/135387638/texazifegidikopava.pdfIn PDF document text
    • https://cdn.sqhk.co/xakatikakizi/bicig5V/little_blackfoot_river_montana_fishing_report.pdfIn PDF document text
    • https://jonolepazom.weebly.com/uploads/1/3/4/5/134520471/xojefafufaduzoxapuv.pdfIn PDF document text
    • http://salleapp.xyz/electricity_and_magnetism_study_guide_5th_gradefk0x9.pdfIn PDF document text
    • http://italysummer.space/how_much_does_fruity_loops_studio_costz62bu.pdfIn PDF document text
    • http://tavegumata.sportsontheweb.net/bead_embroidery_stitches.pdfIn PDF document text
    • http://espacecmb.xyz/8690807709441l40.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/fovoxagasebarigekifabel.pdfIn PDF document text
    • https://renijekut.weebly.com/uploads/1/3/4/3/134306869/5948141.pdfIn PDF document text
    • http://nikecortez.net/kopokisijot5ore3.pdfIn PDF document text
    • https://cdn.sqhk.co/wimedizi/jdl3Oia/radofivemujezewuxege.pdfIn PDF document text
    • http://repochka.site/hoop_new_friends_on_snapchat_apkciqo4.pdfIn PDF document text
    • http://tugeredenazej.mywebcommunity.org/ages_and_stages_4_years.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/gg9alTf/extreme_speed_michael_kors.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/minabiwa/is_there_gonna_be_a_fourth_season_of_a_series_of_unfortunate_events.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/beautiful_flowers_hd.pdfIn PDF document text
    • http://newemepakirid.myartsonline.com/97746454452.pdfIn PDF document text
    • https://0c6b7a74-1ca0-41da-943c-c268a208a416.filesusr.com/ugd/fef373_116829ebfb0844479891ef9839458b4a.pdf?index=trueIn PDF document text
    • http://tirisesu.onlinewebshop.net/kovemaxikavawurazupusova.pdfIn PDF document text
    • https://e192e36c-395d-4660-9df6-aa7aed00c30a.filesusr.com/ugd/3aee12_d89de8ad01ec4196a972b1af6f0701a6.pdf?index=trueIn PDF document text
    • https://fa53e508-d88d-41cb-897c-7a5b6f1bfcc3.filesusr.com/ugd/361045_41f2477815b4478595c5a27f42af3e02.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/25382674802.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/54254409893.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_off0000e867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE867 5304 bytes
SHA-256: 03c4bfa04310dad55fc48eae5707bf0a644999d3c13edfe852884d3c80d74a5d
font_01_sfnt_off0000faa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA1 11108 bytes
SHA-256: 02964399724e4dd49028ccaf1b845ac5deb32d6071bd016fe5ea841e672fdbd2

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