Malicious PDF — malware analysis report

Static analysis result for SHA-256 3520dedec4f3fbfa…

MALICIOUS

PDF

64.9 KB Created: 2021-02-12 09:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 791b66b6b514cf5af58390ca95926080 SHA-1: 1595cf9098211513248687162567aa2cd8fff381 SHA-256: 3520dedec4f3fbfa81d18efe761213e4fb81c3f8385074d84b8862d6903acf66
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=sharp+tv+guide+book PDF link annotation
    • https://rakamirun.weebly.com/uploads/1/3/4/9/134904708/bofuxaj.pdfIn PDF document text
    • http://strita.space/baritone_guitar_neck_template8cud1.pdfIn PDF document text
    • http://boost-shop.xyz/divergente_tome_4_gratuitrzk4t.pdfIn PDF document text
    • http://nububezobuto.22web.org/dawaxelixuragoju.pdfIn PDF document text
    • http://venira.su/fmea_software_templatexgcoh.pdfIn PDF document text
    • https://kagebavewijove.weebly.com/uploads/1/3/0/7/130740568/xusizijobedebaxil.pdfIn PDF document text
    • https://kogevinipuban.weebly.com/uploads/1/3/4/5/134514077/babur.pdfIn PDF document text
    • http://gifudevuf.iblogger.org/20410849948.pdfIn PDF document text
    • http://study-english-04.space/fokaketetizawabalo8yy94.pdfIn PDF document text
    • https://kakenemewaxe.weebly.com/uploads/1/3/4/6/134655752/b2f942d64bb4a.pdfIn PDF document text
    • http://gratoram.site/mabokupowevuxlrf2e.pdfIn PDF document text
    • http://womans30planet.com/black_widow_marvel_wikiv62xd.pdfIn PDF document text
    • http://aduo5.online/citroen_c4_grand_picasso_owners_manual_201153bvn.pdfIn PDF document text
    • https://tobivuzulukimu.weebly.com/uploads/1/3/1/3/131384599/sisarupivobosi.pdfIn PDF document text
    • https://bodarisijusafu.weebly.com/uploads/1/3/5/3/135383154/7931872.pdfIn PDF document text
    • http://samyog.ru/fetal_echo_ultrasound_reportvskeg.pdfIn PDF document text
    • http://hamsterbig.com/download_fonts_for_word_2016jofw6.pdfIn PDF document text
    • https://dodemitewiv.weebly.com/uploads/1/3/1/3/131380707/9639005.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/cb43a2037e266f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/wuxejevi.pdfIn PDF document text
    • http://fakipewoze.rf.gd/a0_size_academic_poster_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/jaxuwiwodupataweduzenugik.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_off0000c1bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1BF 5376 bytes
SHA-256: 40418a09d1c6b7e212d759b5645616ebeecbab6eba0500aee9d5328734cdc2fc
font_01_sfnt_off0000d406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD406 10156 bytes
SHA-256: b1deb2e1af6980ef798be8f7c0f144becff649e9f4391b6d5bcdf782ecbac41a