Malicious PDF — malware analysis report

Static analysis result for SHA-256 7833254f18cb793c…

MALICIOUS

PDF

72.2 KB Created: 2021-02-17 02:04:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e8f949d16ad343481cc893ab5b858348 SHA-1: 02600572925bbf7698da75e36de14b873a80590e SHA-256: 7833254f18cb793c60679420a680816f06f04acd506b4e5cab12a6fc581b37e0
186 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=airline+logo+worksheets PDF link annotation
    • https://zivexuxa.weebly.com/uploads/1/3/1/8/131871677/1493273.pdfIn PDF document text
    • https://remogomati.weebly.com/uploads/1/3/4/7/134748537/pexisigi.pdfIn PDF document text
    • https://cdn.sqhk.co/setawigiz/fjdiihi/times_square_ball_drop_2020_replay.pdfIn PDF document text
    • https://rilinozeni.weebly.com/uploads/1/3/1/0/131070652/68554ddf1e.pdfIn PDF document text
    • https://cdn.sqhk.co/jututumogu/jahhrjc/amazing_wallpapers_for_iphone_7.pdfIn PDF document text
    • https://cdn.sqhk.co/letojeka/e1jeiii/52536808933.pdfIn PDF document text
    • https://cdn.sqhk.co/wiparodub/Mz6hjOS/photo_to_video_maker_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/punipopi/ijfmm41/best_sensitivity_pubg_mobile_no_gyroscope.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisimak/jjfzNGS/97200632118.pdfIn PDF document text
    • https://munemajof.weebly.com/uploads/1/3/2/3/132302982/dalugibenaxa.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/himjhgh/blaze_monster_truck.pdfIn PDF document text
    • https://nofuzibid.weebly.com/uploads/1/3/1/4/131453406/d5df22.pdfIn PDF document text
    • https://mozufidapu.weebly.com/uploads/1/3/4/0/134012608/sipovonepifemawedo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383304/normal_5fc99d0b82e8f.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/ijb5ghn/33594122480.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDD 4880 bytes
SHA-256: 0ec5cf7c491623f66f947655c9fc81f2adec684f74ff3e6d763d7efbf4988dfd
font_01_sfnt_off0000ef89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF89 10588 bytes
SHA-256: 8028102f6e7805567b299c5da7e4efe10e87ade8fee24ea36cbecce589b1a323