Malicious PDF — malware analysis report

Static analysis result for SHA-256 25fa32bd3e8ab0a8…

MALICIOUS

PDF

78.5 KB Created: 2021-03-14 01:02:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: fc0369b9f9170354e666d63eb030b485 SHA-1: aece9cd437dedbd7e5c7526758a7c166b2f9e643 SHA-256: 25fa32bd3e8ab0a8451fa00cd4630c0f12ad3d31856a581edfa58b657682bc5f
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, specifically flagged as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable domains or link farms, suggesting a phishing or redirection scheme. The document body, though heavily obfuscated, contains text related to 'sweet baby photos hd' and application metadata, likely serving as a lure to encourage clicks on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://bologen.ru/123?utm_term=sweet+baby+photos++hd PDF link annotation
    • https://cdn.sqhk.co/ferorigife/ehcibja/autohash_pro_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/resilano/agc2aXj/megitujorebotizixa.pdfIn PDF document text
    • http://zetomanebegox.iblogger.org/collier_county_booking_report.pdfIn PDF document text
    • http://top-agent.ru/20526199948f2m33.pdfIn PDF document text
    • http://santand-es.com/metedobuvesajsqo9.pdfIn PDF document text
    • http://manthoughtswebsite.website/gemewosowu91h.pdfIn PDF document text
    • http://stassikorskyi.com/the_testament_of_rabbi_israel_baal_shem_tovdp2sd.pdfIn PDF document text
    • http://towumodoxilokox.22web.org/rijesodotax.pdfIn PDF document text
    • http://boludibaderujir.22web.org/how_much_is_toyota_yaris_2007.pdfIn PDF document text
    • http://shoop-fg.ru/42794560484rxeqm.pdfIn PDF document text
    • https://cdn.sqhk.co/pimibopugugo/2jcwZNu/93773249633.pdfIn PDF document text
    • http://drovazvenigorod.ru/gemozirubosalpsb8j.pdfIn PDF document text
    • http://anyita.space/platform_toolset_v100_for_visual_studio_2019bih9g.pdfIn PDF document text
    • http://mklhhhh.space/esposa_de_genaro_garcia_lua_linda_crv663p.pdfIn PDF document text
    • http://freshmind.net/19158856936fl2lc.pdfIn PDF document text
    • http://prizinsta.info/28465579447cb2n2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://724418e0-3ace-43c1-abd8-628b4820fc71.filesusr.com/ugd/6df952_cdb8aeade56349759b365b1a229ffcc8.pdf?index=trueIn PDF document text
    • https://19508648-7f28-415f-8121-b57715dc1465.filesusr.com/ugd/9734e7_f828286b89f646daad807f38746d2523.pdf?index=trueIn PDF document text
    • https://9eb5ee95-128e-4115-bcd6-d8db8525ce49.filesusr.com/ugd/9904c2_8593ea70811243ceba8553cb032d5b34.pdf?index=trueIn PDF document text
    • http://vokozebutiri.rf.gd/54532752667.pdfIn PDF document text
    • http://wufizijutema.rf.gd/how_to_wire_a_ceiling_fan_with_light_and_remote_control.pdfIn PDF document text
    • https://8c1dc56a-a131-4b43-acff-3635b9115217.filesusr.com/ugd/90423f_11e3d1f106f64ed080ff7c7c4c96f713.pdf?index=trueIn PDF document text
    • http://vetiluxakosimut.epizy.com/how_do_you_use_a_pampered_chef_food_chopper.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_off0000f3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B1 5356 bytes
SHA-256: 497094dbc11f3d458cc7ec2ffa3ed4de2a6b90e85e2491ffff72bd9823946a89
font_01_sfnt_off000105f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F9 11596 bytes
SHA-256: 4a5bfd7f2de4533abafd65274b21ccdcdbc9d19bc0e77a0761fdde8655df87b0

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