Malicious PDF — malware analysis report

Static analysis result for SHA-256 480951877b7fdb13…

MALICIOUS

PDF

78.3 KB Created: 2021-04-29 11:57:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e716c1196169d9d543dc903832d6ee37 SHA-1: 3a743fd38ba2101eec1d2300a3a326423972c76a SHA-256: 480951877b7fdb1394ac729eb1c69e19b63706ee2a4361dcfcc27e2eacef3e5d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/strik?utm_term=honda+eu2000i+generator+oil+specs PDF link annotation
    • https://cdn.sqhk.co/rikopekela/xjjXs40/wedding_cake_toppers_with_dogs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393188/normal_60119785bf2e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485702/normal_602a223db110e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420468/normal_5fc83f1dc9664.pdfIn PDF document text
    • https://cdn.sqhk.co/puxezuxivas/hiXRhcE/42947636144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449775/normal_5fea0244c781c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384851/normal_5fe9153c93ecf.pdfIn PDF document text
    • https://cdn.sqhk.co/sabepakofo/hhsbVgi/beat_swiper_godzilla.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/hhjdhid/43068504625.pdfIn PDF document text
    • https://cdn.sqhk.co/rasadenibe/eggiiLL/66729768704.pdfIn PDF document text
    • https://cdn.sqhk.co/jogowijalaro/Ngemhzd/lenovo_chromebook_c340-_11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375071/normal_60176a7e28711.pdfIn PDF document text
    • https://cdn.sqhk.co/zenokosix/jhhhahL/ticket_to_ride_game_review_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376866/normal_6060460f6a4e9.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/8hejgKc/rawokagogigimajupizekoxu.pdfIn PDF document text
    • https://cdn.sqhk.co/tititafoza/XGhcTHw/dewudava.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://figapow.epizy.com/shoot_hunter_gun_killer_hack_game.pdfIn PDF document text
    • http://molitumulejoji.rf.gd/xasizanedu.pdfIn PDF document text
    • http://bafowixo.rf.gd/keto_diet_recipes_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/povenoxuwovozobipajonu.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/how_to_connect_my_skullcandy_indy.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/bc_fishing_guide_license.pdfIn PDF document text
    • http://fazafowunop.epizy.com/4th_grade_spelling_words_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/sears_garage_door_opener_replacement_remote.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_off0000f2e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E5 5476 bytes
SHA-256: 7c867a34063f02e049bd3179c27eac730e70a4bf152efbfcdbfbc9793bddd998
font_01_sfnt_off00010594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10594 11196 bytes
SHA-256: 1df8c7c7a47fe4805bc177058db5431e9eeb8b9c0a03efd379135069076dfa68

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