Malicious PDF — malware analysis report

Static analysis result for SHA-256 cead75f0046dbdbc…

MALICIOUS

PDF

79.2 KB Created: 2021-03-12 10:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 35982c198141b0f803f4839ad9351f81 SHA-1: e1669611d518b111d0668fcb7fac8ba709157caf SHA-256: cead75f0046dbdbc5abd5d048116043b09c453d4f45fc8e54a95f97de7af75fa
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 embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, appears to contain keywords related to weight loss, a common phishing theme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=what%20detox%20tea%20helps%20you%20lose%20weight PDF link annotation
    • http://fejugutafilevin.scienceontheweb.net/muvupi.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/hp_photosmart_7515_printhead.pdfIn PDF document text
    • http://tevajevidiwa.22web.org/shooting_gallery_gw2_guide.pdfIn PDF document text
    • https://pibefabetanob.weebly.com/uploads/1/3/4/3/134376782/ff481a6c112bc29.pdfIn PDF document text
    • http://favodokoleti.mypressonline.com/aldehydes_ketones_and_carboxylic_acids_ncert_solutions.pdfIn PDF document text
    • http://swiss-gear-top.xyz/73840216831b932e.pdfIn PDF document text
    • http://jidagepopisar.22web.org/la_hija_del_sastre_ch_13_vocab.pdfIn PDF document text
    • http://pmaider.com/on_the_road_movie_review_rotten_tomatoeszu9yd.pdfIn PDF document text
    • https://lurexiji.weebly.com/uploads/1/3/4/5/134594132/vuwakegijavedef.pdfIn PDF document text
    • https://vefiwuzozubeki.weebly.com/uploads/1/3/0/9/130969791/wunonubakatojel_libitofebo_pigesar.pdfIn PDF document text
    • http://prostochillforum.fun/tafebitesuvupawavuld73yq.pdfIn PDF document text
    • http://xejomukeg.22web.org/61163152622.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cb2d4818-2134-4ea5-ae57-1bc45cfc4292.filesusr.com/ugd/7e787c_a660099034154b0994ec43ed0632bf82.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gedexim/justice_love_tarot_guide.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/ruvuguxuman.pdfIn PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_af2b15f7bdb9495495a1bb84949f7f75.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fizufapu/2826215023.pdfIn PDF document text
    • http://sunefisubu.rf.gd/how_to_say_hi_slang.pdfIn PDF document text
    • https://9170d309-caca-4186-8987-bf6b40ce219c.filesusr.com/ugd/baef12_542cd1edc09144229f23b1e4fd46434a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/gutozetipemazutumifi.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/judononupitekevonara.pdfIn PDF document text
    • https://2e8e3215-33bf-4fe1-bc67-b38dac560527.filesusr.com/ugd/269bb8_11706d57bf9048ec8d7d29ff379b768b.pdf?index=trueIn 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_off0000f996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF996 5400 bytes
SHA-256: 70051681d4204f724fede6a711cc1adc49ac8f27e6cfaea91d7a554edb18be48
font_01_sfnt_off00010c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C1A 10436 bytes
SHA-256: be1d2d9b2fbd67532549a9ab6c865ca47e26368824566837d4e1024811e71f2e

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