Malicious PDF — malware analysis report

Static analysis result for SHA-256 151ee2f023883969…

MALICIOUS

PDF

87.9 KB Created: 2021-05-04 22:07:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8fe4a881e2b86d5ee49e45bd5802d9bc SHA-1: 584af7f80ab3495928cbeff8f8a789fea73581c4 SHA-256: 151ee2f0238839696ba214cc9c957ea4e4141634e649d28b906fffc9228fd808
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document body and embedded URLs suggest a lure related to downloading free books, specifically targeting users searching for 'Deepak chopra books in hindi pdf free download'. The presence of numerous external URIs, many on disposable hosting, further supports a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/strik?utm_term=deepak+chopra+books+in+hindi+pdf+free+download PDF link annotation
    • http://citrus-fruit.space/tesco_job_application_answers_20182pczn.pdfIn PDF document text
    • https://kipigifusulip.weebly.com/uploads/1/3/4/4/134437712/vezolovixelok-fisafunegaje-geger-bulanasakimure.pdfIn PDF document text
    • http://maykistore.ru/lutekuzixai162x.pdfIn PDF document text
    • https://kijagixizob.weebly.com/uploads/1/3/3/9/133997709/zexojazebefevij-lalilari.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483587/normal_60479d0986462.pdfIn PDF document text
    • http://livecopyrightverification.com/renajovovufesowerawotudzzzj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471230/normal_6038c4bb17c0b.pdfIn PDF document text
    • https://kokazokurazafan.weebly.com/uploads/1/3/5/3/135348127/8cda955a4cb9.pdfIn PDF document text
    • https://jaxumemiri.weebly.com/uploads/1/3/4/4/134465633/13aac2bac8eef7.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/benakodatn2huh.pdfIn PDF document text
    • http://ecoterritory.store/marantec_4500e_remote_programi5wf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494430/normal_604cfe7053648.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459164/normal_605dd064307e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501514/normal_5ffe283a157b2.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://s3.amazonaws.com/banula/the_monkey_business_illusion_erklrung.pdfIn PDF document text
    • http://bibirosomuxir.epizy.com/jakemakovebanikojerowuw.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/lagu_awesome_god_hillsong.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/what_is_scientific_management_theory.pdfIn PDF document text
    • https://ca108e69-7b6b-43f0-8f16-d96ebeb8a33d.filesusr.com/ugd/79e0dc_4393c353b97743f681bdd5bcfb6a1a22.pdf?index=trueIn PDF document text
    • http://rubujizuz.epizy.com/47738454062.pdfIn PDF document text
    • https://4993f9ff-345c-4c03-a8ec-d4f8dac664d6.filesusr.com/ugd/debbe1_c02fb67d3c85492d995ef6439766a347.pdf?index=trueIn PDF document text
    • https://5be7aec3-7d66-433b-ae1d-2bfb807ddf2a.filesusr.com/ugd/24deb6_436addece88f4ca48582296f3fe3668a.pdf?index=trueIn PDF document text
    • https://a79c6309-487e-499f-a993-0ac454a400c8.filesusr.com/ugd/747acf_6fad6a912ec9407facf83145d5f1c340.pdf?index=trueIn PDF document text
    • http://rewexukid.epizy.com/1._antecedentes_histricos_de_la_administracin_de_las_operaciones.pdfIn PDF document text
    • https://26bfc7ce-baa4-43a1-9280-72312523cbd3.filesusr.com/ugd/5af86b_8fa653572db5406f905da25621d7f4ac.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kotenu/demisabixuj.pdfIn PDF document text
    • http://repajazofuwide.epizy.com/animal_wise.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/rofuxiwezerisujoke.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_off0001057b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057B 5244 bytes
SHA-256: 36ae38248345df3519eb407cd8a1b703906f2ae7e7c2e3aae1709412804c989a
font_01_sfnt_off00011740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11740 13944 bytes
SHA-256: 3de1f1fe7d14f8249987285a516a862ac9afd7010e21a748c21992be7c6e226b
font_02_sfnt_off000142d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142D3 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34