Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f19765b37b69938…

MALICIOUS

PDF

72.6 KB Created: 2021-02-15 01:44:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dab65fe3803ecf487c80db9bf34dad24 SHA-1: 07437608b384fcb5b8215552a392d4fa7ee11f14 SHA-256: 0f19765b37b699382282230a72183218674fc524aa58a0946cdb39506c3ea30f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=apk+obb+call+of+duty+strike+team In PDF document text
    • https://pufenenuboz.weebly.com/uploads/1/3/0/7/130738511/gugukojud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465565/normal_5fd2cf7fa4a60.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/4pPghja/zejukezip.pdfIn PDF document text
    • https://cdn.sqhk.co/tepobugu/67njggd/hit_it_the_button.pdfIn PDF document text
    • http://rukozhop-guide.com/bass_guitar_songsbv1t3.pdfIn PDF document text
    • http://4338bacchus.com/bookkeeping_template_for_restaurantrufk1.pdfIn PDF document text
    • http://fitokaps.xyz/47398723994hls0m.pdfIn PDF document text
    • http://vir-tus.com/karerujunozawuwisatowovoz7oof.pdfIn PDF document text
    • https://senorori.weebly.com/uploads/1/3/4/6/134641151/6e5c357990.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384159/normal_5fc6185038ea1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500667/normal_6014121e73f50.pdfIn PDF document text
    • https://vunorozixu.weebly.com/uploads/1/3/1/1/131163876/fefotoz.pdfIn PDF document text
    • https://tiketutowiko.weebly.com/uploads/1/3/5/3/135345961/3725420.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479454/normal_5fdb101000306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453906/normal_6017289b7bb7f.pdfIn PDF document text
    • http://pek-24.cc/1169235165454584.pdfIn PDF document text
    • https://cdn.sqhk.co/nudizodi/dhfhgmO/73586905207.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_off0000ddc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC5 5596 bytes
SHA-256: 07a6a89b7e32029f63ef83d7bf0c49ed4a443887eb02291cdfe0e8002a207de5
font_01_sfnt_off0000f0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C5 10888 bytes
SHA-256: bc977e997e6f81aed0678da97af67191b3b58ee05b5479d834f75ee52ae55ef5