Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ddab6ecfcd4c0c…

MALICIOUS

PDF

71.8 KB Created: 2021-02-22 13:18:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9c6ef3437c60d813a0bb9799672af252 SHA-1: 63c2dd45f6bacc250685adb2224cf92b2c521e32 SHA-256: b9ddab6ecfcd4c0c9bb7a079f3a16d3c9ebb9b9ce92eb524d01c9187ff911ecd
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://jacksth.ru/wix?keyword=manual+camera+sony+cyber+shot+dsc-w350 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4484633/normal_5ff06b1333e87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452865/normal_5fee1451c32d8.pdfIn PDF document text
    • https://cdn.sqhk.co/nadetajagupe/jcpVQWH/preschool_learning_fun_songs.pdfIn PDF document text
    • http://medakijizu.22web.org/jukewazaketevidasen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393624/normal_5fcdb0126696a.pdfIn PDF document text
    • https://cdn.sqhk.co/xaloxezajaga/0e8m6ih/royal_battletown_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375206/normal_60036d8a1379d.pdfIn PDF document text
    • https://cdn.sqhk.co/gabixeme/Gjehfhe/gewerivijamatom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pareruwawetis.rf.gd/18162609972.pdfIn PDF document text
    • http://fanirivi.rf.gd/champion_korean_movie_subtitle.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/btd_6_mod_apk_android_1.pdfIn PDF document text
    • http://xivubijorudi.epizy.com/46161744964.pdfIn PDF document text
    • http://jebebubijegew.rf.gd/55619460673.pdfIn PDF document text
    • http://sujegulagu.epizy.com/zadelu.pdfIn PDF document text
    • http://fajesunuk.rf.gd/suwolok.pdfIn PDF document text
    • http://zogaxogoraf.rf.gd/targeting_mathematics_5a_workbook_answers.pdfIn PDF document text
    • http://gupepitasaxisal.epizy.com/why_wont_my_bluetooth_speaker_connect.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_off0000db49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB49 5980 bytes
SHA-256: 82b5cd8419c27e4594643ac7381f1dc476ddc14a746c2f20f21b0363af0ac98d
font_01_sfnt_off0000ef98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF98 10152 bytes
SHA-256: 6db2dee7845e2cd60205266f26bcaa069b6eea0c643188e3c1dd0a6cb6245dcc