Malicious PDF — malware analysis report

Static analysis result for SHA-256 00bae70b82c7b843…

MALICIOUS

PDF

73.4 KB Created: 2021-03-24 00:31:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: bdd35e1bed9c116e57350050f498422a SHA-1: a6c898239571427273181266a15d660c794721d5 SHA-256: 00bae70b82c7b84327acf277a87552dd19466b5f803102980d558de3d3af4753
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO poisoning or phishing. One prominent URL, 'https://xezojetit.ru/strik?utm_term=2000+jeep+grand+cherokee+transmission+replacement+cost', is presented in a context suggesting a lure related to vehicle repair costs. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/strik?utm_term=2000+jeep+grand+cherokee+transmission+replacement+cost PDF link annotation
    • http://jogajep.medianewsonline.com/journal_article_critique_example.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nodikaduf.onlinewebshop.net/binomios_con_termino_comun_ejercicios.pdfIn PDF document text
    • http://tetaxejil.rf.gd/binomial_theorem_probability.pdfIn PDF document text
    • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_a43e56dfc1f54c0d82e97072ad0de778.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8299dd-bd74-4b92-bb64-9a3b6f33bc3d/nipizinatufudo.pdfIn PDF document text
    • http://gixuronubej.epizy.com/causes_and_effects_of_water_pollution.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/google_drive_order_form_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/222b62b8-9a07-473d-a5c0-615683640a77/55689473289.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/canon_powershot_sx20_is_price_in_pakistan.pdfIn PDF document text
    • https://c7f0abc7-d23b-482d-bd16-0771495bb668.filesusr.com/ugd/bb13a2_c51bff656cf84d3a94b3a82c0c8635ac.pdf?index=trueIn PDF document text
    • http://gogedejejap.rf.gd/wusevex.pdfIn PDF document text
    • https://650c977b-0274-48a2-8498-43c0efc39f4e.filesusr.com/ugd/dbad32_dd1ed86780cf42c8ab660f69f4f79888.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0889f6f2-43fd-4e13-bb1e-677c04cd2814/cfa_level_1_pass_rate.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/xovoneb.pdfIn PDF document text
    • https://ced6af22-cf5f-4df0-9cd6-2d424634d287.filesusr.com/ugd/3eed2b_bbc87061676241aea24ad7c4cd67c4a8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b25576a-5cdf-422b-afcc-7a16efc8f5a4/subaru_ea190v_3100_psi_pressure_washer_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/79604697617.pdfIn PDF document text
    • https://f0198b83-f3fe-41b4-8315-bacd7eabb238.filesusr.com/ugd/2b3f46_9317932d763b4acdba19c4da487f7539.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/88979854920.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/8_ball_pool_game.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/new_album_song_masstamilan.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/can_you_americas_cardroom_on_ipad.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/zitepugipojijanamed.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_off0000e07a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07A 5804 bytes
SHA-256: 6b3966eae953a5de9381800edc1fbc996dca49bc89443ebc41cf135cfd75e21d
font_01_sfnt_off0000f419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF419 10432 bytes
SHA-256: 17a608be6d0b290b17625ce3aba629c6b3e4a0004943df22de1293f4a029ae83

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