Malicious PDF — malware analysis report

Static analysis result for SHA-256 32da504a510eedfa…

MALICIOUS

PDF

78.2 KB Created: 2021-03-01 02:55:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2cfbe18275b815929b716cc3571f05a0 SHA-1: 9c2059477ab9368d45deccf265a8b869bf3bfaf7 SHA-256: 32da504a510eedfa5af64abe3bbec7780551b5c4ac7fd7439b5be7d4198066a1
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 0.9996

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://botokaw.ru/strik?utm_term=gabriel%2527s+rapture+part+2+release+date PDF link annotation
    • https://cdn.sqhk.co/wezopexa/5G9xiez/cannonball_osrs_ge.pdfIn PDF document text
    • http://vawagizipul.iblogger.org/how_long_does_wilderness_first_aid_certification_last.pdfIn PDF document text
    • https://xijukuto.weebly.com/uploads/1/3/4/3/134354051/pobimelo.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/does_the_star_of_bethlehem_still_shine_today.pdfIn PDF document text
    • https://cdn.sqhk.co/bawevabob/iiiIhfR/santa_claus_running_shirt.pdfIn PDF document text
    • http://figedizizexi.22web.org/youku_english_version_free.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/trail_guide_to_the_body_5th_edition_download37mch.pdfIn PDF document text
    • https://zekasujiminog.weebly.com/uploads/1/3/4/3/134366003/favurabogivenizafuz.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/how_to_count_annual_leave_days_in_hong_kongw4p5r.pdfIn PDF document text
    • http://nipamaton.22web.org/a_fire_upon_the_deep_map.pdfIn PDF document text
    • https://mipopifedaruw.weebly.com/uploads/1/3/4/3/134356442/a83002ee37df7c.pdfIn PDF document text
    • http://ca-manalapan.space/plt.scatter_size_of_dotsir5sw.pdfIn PDF document text
    • https://vunivejo.weebly.com/uploads/1/3/4/2/134266425/dedd5.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/jmjjhaF/mix_white_paint_with_water.pdfIn PDF document text
    • http://nakanilo.club/30950175878n0cdx.pdfIn PDF document text
    • http://xelibirujegid.mywebcommunity.org/wogidurobipujinuxujexopub.pdfIn PDF document text
    • http://fallofelin.online/what_is_the_final_step_in_the_decision-making_processlotbb.pdfIn PDF document text
    • http://bawazofo.getenjoyment.net/zafamevajajuzamilol.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/bejideba/invention_of_the_industrial_revolution_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/diwazegaka.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/zivumalo.pdfIn PDF document text
    • http://pebotavafusu.epizy.com/the_way_i_am_charlie_lyrics.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_off0000f2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2ED 5288 bytes
SHA-256: c62ee291a9af875ed0ae774f7e766cc6e751ee2864e29fe4ec5bcebbbf4f1967
font_01_sfnt_off000104fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104FB 11220 bytes
SHA-256: 748215c5d9030f41553231ef8ac1a899f2c1b20ac4ecba0063e7a920c470b7c7

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