Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d63478008bb2ec2…

MALICIOUS

PDF

79.9 KB Created: 2021-03-14 12:50:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9f8a500b6c1e2fe50c47b0485e7764d6 SHA-1: 17c2db7b644e4ca93658c7ee627c2607880214be SHA-256: 3d63478008bb2ec2de2b3a61f45802ef31bd9f5121c6dda34c7ae671ef9d7e6d
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 0.9993

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://jottigo.ru/wix?keyword=coal+hearted+mhgen PDF link annotation
    • http://cenderaoriginator.com/minecraft_castle_designs_step_by_stepk2lvf.pdfIn PDF document text
    • https://dovedesomubax.weebly.com/uploads/1/3/4/4/134487211/dofewomiri.pdfIn PDF document text
    • http://dayzcommunity.info/best_books_2020_for_8_year_olds9ddgp.pdfIn PDF document text
    • https://cdn.sqhk.co/zujijivopuju/pEKjbnE/3422864938.pdfIn PDF document text
    • http://quickstore.pro/autosar_adaptive46j1u.pdfIn PDF document text
    • https://cdn.sqhk.co/jugemito/dhimhjS/69233608897.pdfIn PDF document text
    • http://speak4pro.com/41365833416n4fr1.pdfIn PDF document text
    • http://subbellassecret.com/512105504379n2va.pdfIn PDF document text
    • http://blue-tick-central.com/bavatinoruzevadeb6a4q0.pdfIn PDF document text
    • http://lalashoppen.online/67105159906uko7a.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/eDqjgie/tanglewood_resort_pottsboro.pdfIn PDF document text
    • https://ganupedudajoz.weebly.com/uploads/1/3/4/5/134586443/xetidilotebavazu.pdfIn PDF document text
    • http://folugomobok.getenjoyment.net/get_forklift_certified_online.pdfIn PDF document text
    • http://distornyup.site/kozuxixupaserininusoaieyu.pdfIn PDF document text
    • http://winsbig.space/fisica_clasica_y_sus_ramasoqczr.pdfIn PDF document text
    • http://mail-autoscout24.net/route_101_traffic_reportcg4b3.pdfIn PDF document text
    • http://help-lnstagram-verifycopyrgiht.com/vibibalejanozpd508.pdfIn PDF document text
    • http://static-get.top/90970865906altg6.pdfIn PDF document text
    • https://nabozuritofawun.weebly.com/uploads/1/3/1/8/131857241/30beddd364f4278.pdfIn PDF document text
    • http://samettemiz.xyz/76676647237kshq5.pdfIn PDF document text
    • https://cdn.sqhk.co/botuvawezej/ghwv21M/driving_car_games_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rurebafib.onlinewebshop.net/rca_executive_series_phone_troubleshooting.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/kisagowonapupokul.pdfIn PDF document text
    • http://kepawomokatuke.myartsonline.com/tinoxejuwiluwagid.pdfIn PDF document text
    • http://solejow.myartsonline.com/william_blake_paintings_london.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_off0000fc9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9C 4968 bytes
SHA-256: 287ccafc708dd4bfaff2ba0d4bd19c13cd7e36ab4dc2f110f1ee54dbba98641a
font_01_sfnt_off00010d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D47 10804 bytes
SHA-256: 4f303bda3307d41d6a5b644dcc708e122b601cd2e1632f2b2f0f598c5fbf0807

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