Malicious PDF — malware analysis report

Static analysis result for SHA-256 387da2027fa321d4…

MALICIOUS

PDF

75.2 KB Created: 2021-03-14 00:09:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4416bcb2ab97f6c8dfdd7ac40644ddfc SHA-1: 2f345ddc6d9ef038f626d1fbbace24e366a0938f SHA-256: 387da2027fa321d481fa9d8dc384e12a2b29b725e781983c1322b69cf485ab94
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://dugedepap.ru/strik?utm_term=hp+laserjet+p2035+replacement+cartridge PDF link annotation
    • http://mowisadewojapu.22web.org/seven_day_challenge_diet.pdfIn PDF document text
    • https://revunisukigi.weebly.com/uploads/1/3/4/8/134849871/7c551ecd76e4ad.pdfIn PDF document text
    • https://cdn.sqhk.co/gupikekarobo/jcicTgh/gba_emulator_android_cheats_pokemon_blattgrun.pdfIn PDF document text
    • http://bokegaf.22web.org/vidoguravavowuzerufoso.pdfIn PDF document text
    • https://sovuzozasofebod.weebly.com/uploads/1/3/4/3/134343281/9732754.pdfIn PDF document text
    • http://pawezujexas.mywebcommunity.org/social_finance_uk_glassdoor.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/bjiU5Vg/girafujabolorit.pdfIn PDF document text
    • http://leoidet.xyz/john_wooden_pyramid_of_success_bookcg739.pdfIn PDF document text
    • http://wusozupu.mypressonline.com/jexuletekuzuxusaduku.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/viper_lc3_4706v_installation.pdfIn PDF document text
    • https://goremafijitem.weebly.com/uploads/1/3/4/6/134617837/4678677.pdfIn PDF document text
    • https://jipoditewiwes.weebly.com/uploads/1/3/4/8/134875435/8ed4696a19.pdfIn PDF document text
    • http://successinyourlif.website/used_seat_and_guide_machine_for_sale6njbv.pdfIn PDF document text
    • http://rovanenafet.getenjoyment.net/how_do_you_turn_ringer_off_on_vtech_cordless_phone.pdfIn PDF document text
    • http://cabinetsop.xyz/somezapadusexenps6h.pdfIn PDF document text
    • https://cdn.sqhk.co/penutizufib/iX7ghIK/victory_day_ww2_veteran.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/96342551-79c5-494c-a3bc-4031bef14156/97245429246.pdfIn PDF document text
    • http://wekaniloba.rf.gd/tezelabisorofonemulafadam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd295368-c419-44db-b50a-7f9a8d934467/gatulef.pdfIn PDF document text
    • http://pivunovukemo.epizy.com/sebexugekevegofekepixa.pdfIn PDF document text
    • http://rabatelekovufar.myartsonline.com/https_www.perfect-english-grammar.com_question_tags.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_off0000e7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F4 5992 bytes
SHA-256: cd21fd3d65aeb251ca845a7af8497d5f2efa4b5402b8acca6ddee137cf463bdb
font_01_sfnt_off0000fc40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC40 10280 bytes
SHA-256: 7207b5725e5ab64282e877ac56f65096dc74dd38e08ece7626c165a57047cc46

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