Malicious PDF — malware analysis report

Static analysis result for SHA-256 d614d3ea3f4257f4…

MALICIOUS

PDF

81.8 KB Created: 2021-05-05 17:51:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 048a0e85fec3e362ad556940a624f9ab SHA-1: 53daa6a2dc5cf0c39c087977633e28754c79e92d SHA-256: d614d3ea3f4257f4d29160a29c5ed2753b41232a9ac7d72ecafa0b8a273e72bc
126 Risk Score

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 0.9987

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://jumiwimov.ru/strik?utm_term=sears+front+load+washer+repair PDF link annotation
    • http://beamorem.com/verezekusojafowesosenuteggp68.pdfIn PDF document text
    • http://arenaprobet.com/engineering_economy_solution_manual_slidesharez3bxh.pdfIn PDF document text
    • https://kozamewibigox.weebly.com/uploads/1/3/0/8/130874388/752143.pdfIn PDF document text
    • http://varietystore.website/973321043672b5c.pdfIn PDF document text
    • http://fevinoreniwelik.sportsontheweb.net/when_can_you_book_disney_2022.pdfIn PDF document text
    • http://esclub.info/lifawerijekejogobukakanuvy84t.pdfIn PDF document text
    • http://agreevudb.rest/how_to_get_a_pro_bono_lawyer_for_child_supportjgp8v.pdfIn PDF document text
    • http://moitender.org/charlie_malayalam_movie_tamil_dubbed_tamilrockersvxprw.pdfIn PDF document text
    • http://pagebake.com/walonajifa5cfzk.pdfIn PDF document text
    • https://digokevun.weebly.com/uploads/1/3/4/7/134747151/81eba8005.pdfIn PDF document text
    • http://sumapewub.getenjoyment.net/motorola_mc9190-g_specs.pdfIn PDF document text
    • http://leyloften.online/can_anyone_become_an_ethical_hackerrhpmu.pdfIn PDF document text
    • http://jetinaxisodew.mypressonline.com/51554667551.pdfIn PDF document text
    • https://nadagedo.weebly.com/uploads/1/3/1/8/131858166/eceb1e7a3fe40.pdfIn PDF document text
    • http://storedubai.shop/adkar_al_nawm_en_arabenfor5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/842c9013-f8f7-4ca1-8779-9c90bdc6b522/lonely_planet_mexico_city.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1642d201-8f55-4bbb-bc0f-87334361d986/plato_the_republic_summary_book_2.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/lord_of_the_rings_3_tamil_dubbed_movie_download_in_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/bagokiko/mosoke.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/graco_pack_n_play_quick_connect_mattress_size.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/gigugakupusazifineru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68afead6-4396-465e-ba10-f8215f4ead86/defigatapufupajamotaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef7bc280-96f9-4fcf-91c6-eb2c2b170cc5/74914698251.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/36922514131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a84a8b0-2bf3-4d5e-919e-1a90175f70d3/mr_coffee_iced_tea_maker_replacement_pitcher_3_quart.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B1 5112 bytes
SHA-256: f05eceb5eaae4541f554aff6f884870a54baf54212aee94676e3413b90c2a1e7
font_01_sfnt_off0001080e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1080E 10200 bytes
SHA-256: dbe68d199fcfd250e3a467f21eee68931b1eb47c590ef103b56954b80f4035e4
font_02_sfnt_off00012b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B00 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c