Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d49af26a29f5227…

MALICIOUS

PDF

72.4 KB Created: 2021-03-25 00:15:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 86ae626cf9c9ef5f53e8f08043f01afe SHA-1: 5bf1ff6231d25193420fec8539fc1a313b07a8c0 SHA-256: 9d49af26a29f522765566ee98c66b54770109b41545873228771e31ab2544906
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and is flagged by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicates maliciousness. The document body, though heavily obfuscated, contains keywords related to garage door openers, suggesting a lure to a malicious site for phishing or malware distribution. No scripts were extracted, but the presence of multiple external URIs points to a likely attempt to redirect the user to a compromised or malicious host.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/wix?keyword=chamberlain+garage+door+opener+remote+programming PDF link annotation
    • https://mewofotas.weebly.com/uploads/1/3/4/5/134524455/2282380.pdfIn PDF document text
    • http://petonopelun.iblogger.org/ferasebiseporipetudive.pdfIn PDF document text
    • https://dofedexakupular.weebly.com/uploads/1/3/4/3/134317333/xosifoduzera.pdfIn PDF document text
    • http://guparob.mywebcommunity.org/13194540006.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/ggiiuPe/dinghy_davits_systems.pdfIn PDF document text
    • https://cdn.sqhk.co/jiwosowo/haijigg/rush_limbaugh_podcast_youtube_october_21_2020.pdfIn PDF document text
    • https://wirosumarot.weebly.com/uploads/1/3/1/3/131398493/wokosu.pdfIn PDF document text
    • http://dupamineni.medianewsonline.com/cayley_hamilton_theorem_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/GSridze/brick_breaker_star_space_king_online.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/nwA2igK/application_support_mobilesync_backup_operation_not_permitted.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/kia_optima_hybrid_2013_owners_manual.pdfIn PDF document text
    • http://parazepurafeza.medianewsonline.com/zevujen.pdfIn PDF document text
    • https://tijaworiluwulu.weebly.com/uploads/1/3/4/3/134363233/e23991b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fefomuk.epizy.com/reading_comprehension_worksheets_9th_grade_multiple_choice.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/how_many_amps_is_the_bissell_powerforce_helix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11a1c7e0-46e7-43c6-9cb5-e45004035be1/oppo_103_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0aad849-a842-4367-af09-c9eae993790f/79050023294.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/68709524141.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0f86bab-7c81-43a8-baaf-8de6d5011d3e/cuantos_pies_tiene_un_metro_80.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d90d06-f498-4cae-8ae4-d7037ca57163/why_is_my_acer_keyboard_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/481c70d6-b5b2-4a29-95e3-fbfedb9837fc/jetotaj.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/katalevunojabebagunozisa.pdfIn PDF document text
    • http://tenovelipa.rf.gd/85307667585.pdfIn PDF document text
    • http://mujujilunel.epizy.com/download_the_revenant_full_movie_in_hindi_480p_filmywap.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_off0000df6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6A 5240 bytes
SHA-256: e9f0529f3112cdc3e20c5d59fb5844cb2993d2d657a860cce2b97fe7d7d12740
font_01_sfnt_off0000f103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF103 10040 bytes
SHA-256: 1d17b2789d9e8d92da9382ac2358a7e05f32b1c6387f395b2d9a26c1bbcc8dd9