Malicious PDF — malware analysis report

Static analysis result for SHA-256 b49716adee0a97f7…

MALICIOUS

PDF

105.4 KB Created: 2021-02-26 13:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7ce218c6326290acb17552c96b378e70 SHA-1: 9546d45174419292d7c17d663f30539608fe9cdc SHA-256: b49716adee0a97f76ecba699c28b2f47d1986b83c2338338ca888f19e77071c0
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The embedded URLs, such as 'https://fokemale.ru/aws?utm_term=what+genre+is+robinson+crusoe', suggest a phishing or malware distribution lure disguised as search results. The presence of external links and the overall structure indicate an attempt to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/aws?utm_term=what+genre+is+robinson+crusoe PDF link annotation
    • http://gladkoe-telo.xyz/62111655365fsk4i.pdfIn PDF document text
    • http://copyright-helps-team.com/lofenozidunifimi59xhl.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/1010854749505ak7.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/82038631584gloje.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/icBjihh/impossible_euro_train_simulator_free_download_for_pc.pdfIn PDF document text
    • http://kvrovk.xyz/wall_street_journal_subscription_deals_studentz3raj.pdfIn PDF document text
    • http://healsmall.space/pemozufufigebd553z.pdfIn PDF document text
    • https://mitumeme.weebly.com/uploads/1/3/4/8/134879381/jugulorajozo.pdfIn PDF document text
    • http://pressit.space/meme_soundboard_pack_download8lp1u.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/why_does_my_cordless_phone_not_work.pdfIn PDF document text
    • https://cdn.sqhk.co/tosijoxopum/ohehfgh/86127177524.pdfIn PDF document text
    • https://kedixusivazusug.weebly.com/uploads/1/3/4/8/134869684/rikoxotonitisos.pdfIn PDF document text
    • https://xizonadap.weebly.com/uploads/1/3/5/3/135326441/3873ec1.pdfIn PDF document text
    • https://gulapekojikag.weebly.com/uploads/1/3/2/7/132741551/subebanutox.pdfIn PDF document text
    • http://flowerport.store/507535130154scrq.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/ghUhdij/horror_hospital_2_game_videos.pdfIn PDF document text
    • https://cdn.sqhk.co/sejejajoxej/jdVHBhd/4x4_off_road_truck_camper.pdfIn PDF document text
    • http://testvvd.xyz/wokogudijozy5qv.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/wegemebufojafak/taxopelus.pdfIn PDF document text
    • http://ziwivazud.onlinewebshop.net/valivikezebufixazuga.pdfIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/64896002487.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/24780131855.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_off00015c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C57 5180 bytes
SHA-256: 3969e7522b2b8dffb591ce6eea0b5991a4e43a87bd218c0a54b575fa89af1e8b
font_01_sfnt_off00016e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E05 13272 bytes
SHA-256: c00f1c67b73da18e912eb5909a3858fa350ef45cbffd8925b61e347e8b44d431

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