Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca8cceb7da400f43…

MALICIOUS

PDF

72.8 KB Created: 2021-03-01 16:13:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7b4413c369ae336002caf3f1d9559a22 SHA-1: d2f2e5f9fabed2e602104d8d417b1fe6c07e6d34 SHA-256: ca8cceb7da400f43afb81bc789bc789969a8aa3edb1d7a58bc4810012ca68106
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/award?keyword=how+to+calculate+p+value+from+f+statistic+by+hand PDF link annotation
    • https://gizomedapirev.weebly.com/uploads/1/3/1/4/131454265/22ea5fec8f59.pdfIn PDF document text
    • http://devgame.design/tozabixasjzx36.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/fK9hhhc/comic_book_animated_movies.pdfIn PDF document text
    • http://kejoxemubogese.mywebcommunity.org/cuales_son_los_tipos_de_investigacion_de_campo.pdfIn PDF document text
    • https://cdn.sqhk.co/nisikevepoxi/cLjcigi/gun_sound_tone_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bomikiwolug/ficghfY/75192513330.pdfIn PDF document text
    • http://tryraisins.pro/8474807434ehtjo.pdfIn PDF document text
    • https://zoparimunafixi.weebly.com/uploads/1/3/4/3/134336740/6521858.pdfIn PDF document text
    • https://sugulone.weebly.com/uploads/1/3/2/7/132740418/lonivuwidasuzom_besivada_kidurez_nawaxenadikunod.pdfIn PDF document text
    • http://marinarus.space/heroism_meaning_in_british_englishos9bm.pdfIn PDF document text
    • https://sibetufubexab.weebly.com/uploads/1/3/2/7/132712005/vuziliv.pdfIn PDF document text
    • http://kushtanash.ru/kolchak_the_night_stalker_theme_sheet_musicx29cn.pdfIn PDF document text
    • https://cdn.sqhk.co/noloxunipe/ig3R6JX/shark_ion_robot_vacuum_r85.pdfIn PDF document text
    • http://porizaritofo.mypressonline.com/33300807181.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zubiluwetij.myartsonline.com/essential_oils_guide.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_off0000dff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF9 5752 bytes
SHA-256: 334eaf31cc3d43660cc16f80b4ccbf9fc8f5044cd29b5968f65f53098f558ecc
font_01_sfnt_off0000f373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF373 10044 bytes
SHA-256: ebf892efa399c6f1f3ba5fc49bc60225c7d5bd80e40a7df8a004892398e2c732