Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef1c5c558c277ca3…

MALICIOUS

PDF

148.4 KB Created: 2021-03-07 20:54:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: cdc5dc7e592c86e37744986d1e7c103d SHA-1: bf87eba557d839507e27b87acdad5b5acc0e14b5 SHA-256: ef1c5c558c277ca3ff3134e86b0b6685a5433f2db96203bbc7aa0b5b9f2d0330
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URLs, many hosted on disposable domains, suggesting a link farm or redirection mechanism. The document body, though partially corrupted, indicates a lure related to a TV show episode guide, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=married+by+mom+and+dad+episode+guide PDF link annotation
    • https://guvusogom.weebly.com/uploads/1/3/5/3/135324715/1f8b0.pdfIn PDF document text
    • http://sifimomikev.sportsontheweb.net/fluke_115_vs_117_reddit.pdfIn PDF document text
    • http://vomimaforotagi.mywebcommunity.org/vebodijosoweripad.pdfIn PDF document text
    • https://cdn.sqhk.co/leporolino/cibVCgc/jumperoo_space_saver_age.pdfIn PDF document text
    • https://nesefutuderixu.weebly.com/uploads/1/3/2/7/132740375/zawowinopulode.pdfIn PDF document text
    • https://cdn.sqhk.co/gulaxemetila/EOchfjb/personalized_post_it_notes_amazon.pdfIn PDF document text
    • http://pasipodo.mypressonline.com/42365686412.pdfIn PDF document text
    • https://dasateju.weebly.com/uploads/1/3/4/5/134582383/gamoniler_verege_gubitotaz.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/45282026079.pdfIn PDF document text
    • https://fudisilutopunus.weebly.com/uploads/1/3/1/4/131438012/paxopukifelubalekod.pdfIn PDF document text
    • http://wozilimesiz.mypressonline.com/psycho_cybernetics_chapter_5_summary.pdfIn PDF document text
    • https://lalojitewimagix.weebly.com/uploads/1/3/5/3/135304200/mixinoz.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/wewuxuviwar/39141094893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1032eb6-2c55-4f8b-93db-400a4f46af33/twilight_saga_eclipse_watch_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f17254b-996b-4d00-87b6-a8f7d6f0afa6/jebilipiri.pdfIn PDF document text
    • http://lojubefogugiku.onlinewebshop.net/how_much_is_needed_to_start_forex_trading_in_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/41361975039.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/uniraj_b._ed_exam_form_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/649f4665-c28e-4a30-9540-719197a47360/confidence_fitness_ultra_pro_treadmill_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/khalbali_hai_khalbali_song_free.pdfIn PDF document text
    • http://kuzemepusiloj.onlinewebshop.net/vejuzo.pdfIn PDF document text
    • http://zaxuzut.atwebpages.com/pofutik.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_off00020c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20C04 5492 bytes
SHA-256: 69777feb50935218e60f6f3474e2b47359117c761a25f4c5c829db9f887b9973
font_01_sfnt_off00021eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21EAC 10664 bytes
SHA-256: b51ca154deedefc19968cf50fe47bf382eecc0164776ae9bbfe9388a7fd5b37a

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