Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b7602fcedb026d…

MALICIOUS

PDF

80.5 KB Created: 2021-03-05 13:54:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6f1e51e1513f8eab422addd114389575 SHA-1: 6c2b69c3a46aa65c8cf4d0f921ea71dbb82cc616 SHA-256: 97b7602fcedb026db22bf2bc8b1a1f2dc407668553885c5c48e525c2f0481865
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 0.9961

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://xajibur.ru/123?utm_term=face+3d+model+app PDF link annotation
    • https://cdn.sqhk.co/kegufamop/6ndihGE/tanekofobizikoji.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/nhjhg2a/3d_paintball_games_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/sivefuxonix/Brgg9b0/17249571319.pdfIn PDF document text
    • http://jixazepo.mywebcommunity.org/conair_upright_garment_steamer_reviews.pdfIn PDF document text
    • http://pasiworuwiwoz.getenjoyment.net/jasogomajudirotogoranunof.pdfIn PDF document text
    • http://lebepufu.mypressonline.com/ziponufoku.pdfIn PDF document text
    • http://lumufurisazela.mywebcommunity.org/religesapeg.pdfIn PDF document text
    • http://barajofa.mywebcommunity.org/python_setuptools_setup_requires.pdfIn PDF document text
    • http://tesekal.mygamesonline.org/32425913337.pdfIn PDF document text
    • https://cdn.sqhk.co/xiteduva/ggiasig/8333221201.pdfIn PDF document text
    • https://cdn.sqhk.co/linerutinew/KhDyPjj/gazisuxoloroxurewejimaxi.pdfIn PDF document text
    • http://pemotutafid.mywebcommunity.org/sepidaxulegivaroledamaf.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/96108124606.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/vertical_delta_loop_antenna_radiation_pattern.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/21986319645.pdfIn PDF document text
    • https://33c7e2ec-32fc-4676-a642-9d95a4379e01.filesusr.com/ugd/622218_71fb8d93dffc42fabab91d9711eb6ca4.pdf?index=trueIn PDF document text
    • https://2c91b947-1dd8-401e-ae91-d595f2f75867.filesusr.com/ugd/0af078_e86aa32d591c44e28ddfa2e3f9aabd37.pdf?index=trueIn PDF document text
    • http://mivetafo.epizy.com/momikifobuvovusoruv.pdfIn PDF document text
    • http://safilizejodi.epizy.com/9138209494.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/pejopupivijalugofow.pdfIn PDF document text
    • https://30b7a97f-6117-4fff-8876-4b3c2220b6c6.filesusr.com/ugd/15cd4d_f1af1e0b38d5492fa9f6430de737528e.pdf?index=trueIn PDF document text
    • http://gubadif.myartsonline.com/sound_blaster_audigy_2_zs_manuale.pdfIn PDF document text
    • http://sipujajawe.epizy.com/debetobenoke.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/password_keeper_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/bipap_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/ruziza.pdfIn PDF document text
    • http://sitejaxikezo.epizy.com/mofefuzukazamemepu.pdfIn PDF document text
    • http://dukowiniwamew.rf.gd/modelo_ellas_comieron_ellas_salieron_ellas_comenzaron_ellas_leyeron.pdfIn PDF document text
    • https://dab7fb03-f2af-4a8e-9cb9-31de623bedb3.filesusr.com/ugd/58b596_d368ba479a9a48e68e290955d6643017.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_off0000fd47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD47 5064 bytes
SHA-256: 76f757db46f15847116eb21c7d636d74de1aa907697ad723f948505d0e6e3652
font_01_sfnt_off00010e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E74 11168 bytes
SHA-256: d708f919719792835d492b532ab1868d4ff283fb46cc86eea1c2da04b9f06b07

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