Malicious PDF — malware analysis report

Static analysis result for SHA-256 8feb82861f9384be…

MALICIOUS

PDF

84.1 KB Created: 2021-03-13 16:34:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7ae93c19b2670816d4ebb48a055e397f SHA-1: e14337fd14db2845c21fd8c82886e0c8b17fd65b SHA-256: 8feb82861f9384bef6612e3851c166a781e26bfb77539f2d7b52c57e79075f3e
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 0.9991

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://druttle.ru/strik?utm_term=smile+raina+telgemeier+summary PDF link annotation
    • http://tedoterolileme.iblogger.org/bomekodozuwotebix.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/football_drills_using_cones.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/dhfiijf/sunrise_smart_tv_apk_downloader_free_download.pdfIn PDF document text
    • http://winoorama.website/tennant_t16_error_codesecuck.pdfIn PDF document text
    • http://sovetnik53.ru/26456470785dspqe.pdfIn PDF document text
    • http://bestgirl69.com/5323923025qluc4.pdfIn PDF document text
    • http://bathforlegs.xyz/how_to_tie_overhand_knot_on_fleece_blanketxtyx6.pdfIn PDF document text
    • http://zufepatajuju.22web.org/xeforetiv.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/Jicvij6/dual_fuel_generator_near_me.pdfIn PDF document text
    • http://kdghy.online/fabegexevirojazimubawju2o.pdfIn PDF document text
    • http://womenit.space/how_long_does_ground_beef_jerky_take_in_dehydrator37ngl.pdfIn PDF document text
    • http://timecodes.net/cazadores_de_sombras_2_peliculadlzqa.pdfIn PDF document text
    • http://mangalvpodarok.ru/961373643256cs7h.pdfIn PDF document text
    • http://life-news.tech/keliwipemujoxa7brv.pdfIn PDF document text
    • https://cdn.sqhk.co/bibobovezave/gd2RJOe/robogedojume.pdfIn PDF document text
    • http://anyita.space/spongebob_squarepants_full_episodes_download0atmr.pdfIn PDF document text
    • http://shoop-fn.ru/pacific_volkswagen_service_department3zh4z.pdfIn PDF document text
    • https://cdn.sqhk.co/bobimugura/PKWsqge/paint_frog_eyes.pdfIn PDF document text
    • http://xelibirujegid.mywebcommunity.org/jomoge.pdfIn PDF document text
    • http://cabinetshub.xyz/90532521381wjnwv.pdfIn PDF document text
    • http://senoratikazunub.22web.org/pdf_apologetics_study_bible.pdfIn PDF document text
    • http://rebelliona.online/the_girl_who_owned_a_city_book97d6p.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DB 4980 bytes
SHA-256: 3fc234679f519301b388eef49d23e6b6d58469ab62b74e707c27b462685d8636
font_01_sfnt_off0000f7a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A6 11524 bytes
SHA-256: dd390c4d149426895f3d106345427c2125fc9efdfaec94c40150d8441bf8781d
font_02_sfnt_off00011ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF5 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
font_03_sfnt_off00013425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13425 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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