Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c7e53217f4c50d…

MALICIOUS

PDF

74.1 KB Created: 2021-03-28 00:35:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48ec586f370a987fc26bac5c68dd5c81 SHA-1: 7f65e8bd2c35d1ac700817c54b08bf2fab71cac5 SHA-256: 47c7e53217f4c50df9d1c5bba20cffa5bcc51e416141e8da520595b591e8903d
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically pointing to 'https://lozipotod.ru/123?utm_term=logiciel+affichage+dynamique+android', indicating a likely phishing or malware distribution attempt. The heuristic 'PDF_SEO_LINK_FARM' further suggests a malicious intent to generate traffic or distribute content through a large number of linked PDFs. ClamAV detection confirms this file is malicious, likely a phishing or trojan variant.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=logiciel+affichage+dynamique+android
    • https://static.s123-cdn-static.com/uploads/4366653/normal_5ff58c4c2d8ff.pdf
    • https://static.s123-cdn-static.com/uploads/4446772/normal_600954927cf0d.pdf
    • http://sebamusimuduj.iblogger.org/carlos_castaneda_free_download.pdf
    • https://dafebifu.weebly.com/uploads/1/3/4/3/134399244/8122295.pdf
    • https://static.s123-cdn-static.com/uploads/4383136/normal_5fde590d652ea.pdf
    • https://cdn-cms.f-static.net/uploads/4418175/normal_6040e9c84a272.pdf
    • https://static.s123-cdn-static.com/uploads/4461250/normal_5fdd1a059eb95.pdf
    • https://cdn-cms.f-static.net/uploads/4420034/normal_5fdc32cbcb43b.pdf
    • https://cdn-cms.f-static.net/uploads/4374024/normal_603111b0aecfe.pdf
    • https://lonojoxojiliw.weebly.com/uploads/1/3/1/4/131438577/4089353.pdf
    • https://static.s123-cdn-static.com/uploads/4473654/normal_5fcf585f3d75d.pdf
    • https://static.s123-cdn-static.com/uploads/4475734/normal_5ff06764b0935.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sejonigimanam.epizy.com/vienna_airport_flight_information_departures.pdf
    • https://uploads.strikinglycdn.com/files/85394ec7-bd14-444a-b276-5b5d2579bef8/does_plantar_fasciitis_get_worse_with_exercise.pdf
    • https://uploads.strikinglycdn.com/files/d98e6030-c4d6-46c7-ab4b-51d0c28af59d/speak_laurie_halse_anderson_plot_summary.pdf
    • http://komadolosa.rf.gd/arbitration_and_conciliation_bare_act.pdf
    • https://uploads.strikinglycdn.com/files/d4236a5a-7c3e-45c6-ad86-2883f8284bb3/bemasuvotawavisuvuxubidal.pdf
    • https://uploads.strikinglycdn.com/files/d83ba163-e14f-40f4-a03c-4a5adef9bd56/33688852319.pdf
    • http://vikalasur.epizy.com/32357105335.pdf
    • https://uploads.strikinglycdn.com/files/e4f0296f-8003-43e1-b1ef-64a68de8a97f/unix_command_cheat_sheet_vi.pdf
    • https://uploads.strikinglycdn.com/files/58800f2f-6193-4cfd-8d96-aa0b936cecc0/john_deere_750_tractor_horsepower.pdf
    • https://uploads.strikinglycdn.com/files/c93e3cd0-1cab-4b3f-b14b-86b8446b62b1/can_i_play_chrono_trigger_on_ps4.pdf
    • https://uploads.strikinglycdn.com/files/ca239f2e-0aee-49d9-8b71-a283f7fcb752/53860379607.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1b6.bin
871c7a73e7057451304cf63d0f875a785f6a416092bd20930e79b7f28f8ba2ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B6 5424 bytes
font_01_sfnt_off0000f40b.bin
9f1d39e1f951237cfb73abdf0a43fe4d73c5fac4b967ece762c35d7b7de0cf67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF40B 11896 bytes

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