Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02633d47561620b…

MALICIOUS

PDF

77.1 KB Created: 2021-03-20 19:00:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de441da0a94996b5ba50174da0b886a7 SHA-1: a8d2bcd882dbb5d260561cf43d0d4d53b504a43d SHA-256: d02633d47561620bb4735cf1d9085353f559f11bedf355488a0d77de62b699f3
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with techniques used to deliver malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://bologen.ru/wix?keyword=proform+525+treadmill+price
    • http://zomolejefej.mywebcommunity.org/domodenurojogijemafogaji.pdf
    • http://rugegav.mywebcommunity.org/78382113867.pdf
    • https://xivapumi.weebly.com/uploads/1/3/1/6/131606059/4698761.pdf
    • http://streamsweets.com/35948313799meyy0.pdf
    • https://cdn-cms.f-static.net/uploads/4421462/normal_5fd67103ec0b6.pdf
    • http://wutanumijejol.sportsontheweb.net/is_there_a_way_to_turn_on_vizio_tv_without_remote.pdf
    • https://vuxulirupam.weebly.com/uploads/1/3/5/3/135346280/fisota.pdf
    • http://muzibatixabu.mypressonline.com/anonymize_comments.pdf
    • http://kawopewil.22web.org/ehsaas_old_movie_songs.pdf
    • https://static.s123-cdn-static.com/uploads/4490127/normal_5fcc1a14da102.pdf
    • http://xonibiz.22web.org/formation_of_gaseous_hydrazine.pdf
    • https://zajefogana.weebly.com/uploads/1/3/1/4/131407312/wewav_najomujuzixedoj_pufabunutok_dubimoluzo.pdf
    • https://static.s123-cdn-static.com/uploads/4500186/normal_5ffb903206755.pdf
    • http://it50off.pro/bachelor_of_business_information_systems_jobspgxfl.pdf
    • https://piximemob.weebly.com/uploads/1/3/4/3/134371032/f38a1.pdf
    • http://dronextactical.xyz/zombieland_google_docsdlwpl.pdf
    • http://sevastopol.sale/do_lawrence_and_holo_end_up_togetherplze1.pdf
    • http://kernig.pro/61029215146j4e8u.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c1ede41e-1bf5-4e71-a2e0-bef7a75a8a39/smart_board_price_in_india_amazon.pdf
    • https://uploads.strikinglycdn.com/files/d15ca9f7-ca37-4e18-a068-af6231a69103/what_foods_to_eat_when_cleansing.pdf
    • http://rimadijek.rf.gd/binomial_option_pricing_excel_spreadsheet.pdf
    • https://uploads.strikinglycdn.com/files/66ee7c52-d6ee-46aa-bb99-4b4c37f3db09/how_to_tell_if_you_have_a_cystic_pimple.pdf
    • http://nejowubixulifud.rf.gd/ziguxugo.pdf
    • http://vameberimonon.onlinewebshop.net/perabom.pdf
    • https://uploads.strikinglycdn.com/files/716479d3-3928-4fb8-8fc4-4eee9e75697c/44420622940.pdf
    • https://uploads.strikinglycdn.com/files/c788b63b-d4c3-4893-a6d3-cb41268c6887/11684202541.pdf
    • http://gimokoso.epizy.com/pk_movie_cartoon_video.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edd2.bin
1bd54c2f3d05b58c0e81931ef76abc514a054b701e4e016fea3518588fecd278		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD2 5380 bytes
font_01_sfnt_off00010014.bin
2f76f29b227307229ace498c8ecbb5a190d7ec70c05f69352bca4b369b3d2d7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10014 11332 bytes

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