Malicious PDF — malware analysis report

Static analysis result for SHA-256 fedb60ea5284a5b3…

MALICIOUS

PDF

84.4 KB Created: 2021-04-03 05:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 747f7d1984a4208c80a1dec2742fc5af SHA-1: c949004c7b4458621fe4d912d46311f6e699bab5 SHA-256: fedb60ea5284a5b33b41d3b55d73c1ee52680518b714671646290eb0897bd219
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9994

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://resalured.ru/strik?utm_term=what+does+app+mean+on+cable+box PDF link annotation
    • https://naligunuded.weebly.com/uploads/1/3/4/4/134472871/vuzodexa.pdfIn PDF document text
    • https://torusakewojowep.weebly.com/uploads/1/3/0/8/130814967/9861236.pdfIn PDF document text
    • https://cdn.sqhk.co/vejurumilef/sbkChia/65854135635.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375525/normal_600e6e9aae104.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488555/normal_5feb9b5897d2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402710/normal_60038482800c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421943/normal_5ff258c19d37b.pdfIn PDF document text
    • https://rijijuxika.weebly.com/uploads/1/3/5/3/135346754/e9faeef2e27098.pdfIn PDF document text
    • https://cdn.sqhk.co/gewewoturila/Rhdifyp/speedtest_by_ookla_android_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/rudolikube/iicgcii/free_online_radio_stations_70_s_80_s.pdfIn PDF document text
    • https://pesasujax.weebly.com/uploads/1/3/4/8/134882000/9724181.pdfIn PDF document text
    • https://cdn.sqhk.co/gupimupiset/iFgejce/nobifiku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423757/normal_605d6f66cf567.pdfIn PDF document text
    • http://rameautbxy.space/rajuvafexorunujetosptb3.pdfIn PDF document text
    • https://goponubinolofuv.weebly.com/uploads/1/3/4/6/134695307/posibinarifabi_fisure_gexufas_vumedaliwor.pdfIn PDF document text
    • http://bettyloustintruckbbq.com/suwepaturidogobe2t9.pdfIn PDF document text
    • http://lnstagram-office.com/how_things_work_usborne_amazonupbfa.pdfIn PDF document text
    • https://cdn.sqhk.co/moturira/dhigdFo/61931008054.pdfIn PDF document text
    • http://bestrongbyg.com/fafuwexinexozahvk3.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d52a97d3-3f1a-4aa8-8376-05f5f4f017fe/how_to_read_coordinates_on_a_survey_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c79a42cd-f750-49cb-a764-7fbe7af2a029/how_to_sue_employer_for_discrimination.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d784685-9961-4b12-84c0-ec64f37c6155/is_boston_market_open_christmas_day.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df60ed58-fb70-459b-b2c9-cf130e7a32e8/93157691062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4925ebc-f5cb-4085-ac01-be17dee4d2a4/fidowamawurawefawa.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_off00010c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C86 5440 bytes
SHA-256: 834994f753800452b024ac66ff1322bc230b69c760129611435e26637fd7371d
font_01_sfnt_off00011eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EED 10844 bytes
SHA-256: 3cc9506314458a4e2e3e99419d33e398846464e4f6006d6e3b7d69cbfb1e8af7

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