Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c47168bd89930b4…

MALICIOUS

PDF

82.1 KB Created: 2021-04-18 06:16:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: e836d4f6e8635a9792bbf8869c2fa031 SHA-1: 22070df54c3f16bc407819241d94014e4a59d977 SHA-256: 1c47168bd89930b4d39f3083e783919997f38746529c5c6f02a87a05f7308e0f
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URLs pointing to other PDF documents, likely to obscure the ultimate destination or to distribute phishing content. The presence of a link to 'lozipotod.ru' with a 'utm_term' parameter suggests a tracking or campaign-related purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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.
  • 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=how+much+oil+in+turkey+fryer PDF link annotation
    • http://auto-fishing-rods1.club/one_punch_man_destiny_roblox_wiki_best_classt00ti.pdfIn PDF document text
    • http://okrasote.info/roomba_770_battery_life3ohxr.pdfIn PDF document text
    • http://uggi-ugg.com/how_to_delete_programs_on_aqualink_rs44go8d.pdfIn PDF document text
    • http://christmas-gift.ru/visibugopadogivabf5h5n.pdfIn PDF document text
    • http://xogubafirugufa.iblogger.org/4654429001.pdfIn PDF document text
    • http://bajagiwovil.22web.org/canon_speedlite_600ex_ii-rt_guide_number.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7b8833d7-014c-4875-9c37-56438ffeb98a.filesusr.com/ugd/ccf209_db1beeea168f47f7b76d781c868ffe2e.pdf?index=trueIn PDF document text
    • https://969948a0-d7f7-4827-958e-a3856fee42d4.filesusr.com/ugd/9d40bc_90bd9e225ea04b1d8ef24c0c53a816c7.pdf?index=trueIn PDF document text
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_85844bb4cf204660a696d87032961c2a.pdf?index=trueIn PDF document text
    • https://95c758d6-fd33-43c6-b5d0-f1f55e07e946.filesusr.com/ugd/cb0188_e64452085bd5449e87c1c1b210e3cc21.pdf?index=trueIn PDF document text
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_98abbe90556d4969ba07e96159a83eb7.pdf?index=trueIn PDF document text
    • http://rawowixit.epizy.com/fepofuwoperutubuginaniz.pdfIn PDF document text
    • https://c6de0af5-2a4c-46da-924c-839bccb102c6.filesusr.com/ugd/5f1f0f_3fc73e525d1e4523a6e90956838fad59.pdf?index=trueIn PDF document text
    • http://bupizaxumora.epizy.com/elementary_biology_textbook.pdfIn PDF document text
    • http://pakekaririwofas.rf.gd/ejemplos_de_dialogo_directo_e_indirecto.pdfIn PDF document text
    • http://rurudowofalav.rf.gd/millennium_development_goals_mdgs.pdfIn PDF document text
    • https://ac3db616-04cb-40f1-8357-c67041f5e20c.filesusr.com/ugd/eda9ba_bc49452ff08a40faba09cec09f20cb79.pdf?index=trueIn PDF document text
    • https://1923692e-f727-4f58-80a8-3583160180e3.filesusr.com/ugd/c4ccc4_4036895233f241ad96bf0dd622204d65.pdf?index=trueIn PDF document text
    • https://eff7b67d-fef5-45b7-bcd6-ffb1b71d3a14.filesusr.com/ugd/b4c9df_2123a5f6672d4ac0ba8d7da2d668ac0e.pdf?index=trueIn PDF document text
    • https://6a421494-2577-4416-904f-e17348f56b63.filesusr.com/ugd/85e76a_8f7b34d9b7014b35a12e6ed62def61ca.pdf?index=trueIn PDF document text
    • https://916646f4-1085-46ff-a557-f209baee2087.filesusr.com/ugd/6c313a_020c62d7d476455597e89172d06d15c9.pdf?index=trueIn PDF document text
    • http://muvubavove.epizy.com/kamika_agama.pdfIn PDF document text
    • http://mesuwirafifi.rf.gd/rotewozijemazesilos.pdfIn PDF document text
    • https://854397d5-242e-4836-9f1e-4d22a5541959.filesusr.com/ugd/88a329_9586f0f8ef4b44f08287ab00b05757aa.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_off0001051e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051E 4952 bytes
SHA-256: 82bc85dfd7781593914f0fe2d194c4b4c932d5a9fc114fbe1660acd3cfa6f277
font_01_sfnt_off000115e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E3 10952 bytes
SHA-256: 417d5d59d2cbb3412370b749392c8564d00bcffc169d1f86bb72cebb7352c2d9

Open this report in the interactive analyzer, or submit your own file for analysis.