Malicious PDF — malware analysis report

Static analysis result for SHA-256 206e1a8454c5492e…

MALICIOUS

PDF

89.5 KB Created: 2021-03-14 11:06:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f2b30c5d3597ea19c7da08c317125ce SHA-1: 1d3822993a93ebd1ef03bd9514a360f47f5637a5 SHA-256: 206e1a8454c5492eae8671d28d67faaa997e58ce5e005c92e789a4a59f97aee1
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and likely phishing-related. It contains a large number of external links, many pointing to benign-looking PDF files, but one prominent link to 'ponafet.ru' suggests a malicious intent to direct users to potentially harmful content. The document body, though heavily obfuscated, contains text related to 'classified ads website template', reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/123?utm_term=best+classified+ads+website+template
    • http://autoport76.online/driving_school_2016_hile_android_oyun_club11grr.pdf
    • http://fujexitekubolok.22web.org/origin_of_basic_biological_molecules.pdf
    • https://pusesame.weebly.com/uploads/1/3/4/6/134662227/f3c8f7af5ff.pdf
    • http://woodbonus.net/keporazolumirinirisinivo4ehdx.pdf
    • https://tejenopaje.weebly.com/uploads/1/3/1/1/131164027/lovelizikatek.pdf
    • http://menajaf.iblogger.org/37175651522.pdf
    • https://boniwivo.weebly.com/uploads/1/3/2/6/132683051/gazure_lamuxulolobop_pisukeforor_falajuluzawob.pdf
    • http://zoom-omsk.ru/cognos_analytics_active_report_samplesoj3w8.pdf
    • http://construt.site/53938855618qse10.pdf
    • https://zadafudabujebiv.weebly.com/uploads/1/3/4/6/134672368/pewejifiso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://61df3396-90b5-4b69-a3ae-475c9da6ebc5.filesusr.com/ugd/516574_dd9085a291e54950abf1a8c9562b02a8.pdf?index=true
    • http://gekojiguno.epizy.com/can_f_statistic_be_0.pdf
    • http://wetovokerug.epizy.com/rockstar_full_movie_123mkv.pdf
    • https://8035c368-62b5-4e0f-b07c-73fd2baf85c9.filesusr.com/ugd/2ee8d4_ef66e606676f41e3bdaaa0b81be313f0.pdf?index=true
    • http://rukubas.epizy.com/43487529482.pdf
    • http://magivekuwili.rf.gd/xawujap.pdf
    • http://danijikuguwidak.rf.gd/newijenixisifopunufiperir.pdf
    • https://fa886832-b9e3-4ce5-a98c-97da2614721f.filesusr.com/ugd/9f8050_1ac2fa1056ac4270a03205c55607efc6.pdf?index=true
    • https://f579be4a-c2ec-451d-94ee-532237c06880.filesusr.com/ugd/9f6a24_6c816c90666d48619ad7d66a63f427be.pdf?index=true
    • https://a49aa754-465e-4bbd-924e-b3d0e7b66bd4.filesusr.com/ugd/81d6a4_52d00789247340ccbcbfeb7aa4484498.pdf?index=true
    • http://tagugatukosag.epizy.com/how_to_cite_references_in_apa_format.pdf
    • http://kogisovaf.epizy.com/rozetapudavo.pdf
    • http://ligunatiresid.epizy.com/castle_ravenloft_board_game_rules.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011642.bin
a3ec1d770cc5ef212800d68e7b87d8899395677df3fb312bf9a4c71dc53966c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11642 5060 bytes
font_01_sfnt_off0001278d.bin
1fe1a452a467b994c6ec213c4df9417c60cf6da44b367eeaf17c354081b0f4a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1278D 10248 bytes
font_02_sfnt_off00014a4c.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A4C 4324 bytes

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