Malicious PDF — malware analysis report

Static analysis result for SHA-256 82278bdf7b9916d2…

MALICIOUS

PDF

66.4 KB Created: 2021-02-06 10:00:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9a05cf52c1455252b45d38e502b17ea1 SHA-1: 150ea8c98ddbfe5181d54c792dddf1d8323231e9 SHA-256: 82278bdf7b9916d26e783f06e3a6dd24da9fee6397fd0d93d6bc2ddf7d7ef45a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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/wb?keyword=introduction%20commission%20and%20fee%20agreement%20templates PDF link annotation
    • https://cdn.sqhk.co/winexajis/jhihAn7/casino_free_games_slots_play.pdfIn PDF document text
    • https://pudagabofozeru.weebly.com/uploads/1/3/4/3/134333597/mobibo.pdfIn PDF document text
    • https://pufetebad.weebly.com/uploads/1/3/4/7/134711346/balusote_jerokodilu.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuxopova/ijRgg16/funny_hand_motion_gif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406229/normal_5fc5ea41e52da.pdfIn PDF document text
    • https://cdn.sqhk.co/livoluxuwad/eoxaRoe/toy_blast_hack_apk_2019.pdfIn PDF document text
    • https://losewilim.weebly.com/uploads/1/3/4/8/134854933/7980188.pdfIn PDF document text
    • https://sivabujik.weebly.com/uploads/1/3/4/0/134017760/kanog_lesejolazisina_pevisevedes.pdfIn PDF document text
    • https://mefimume.weebly.com/uploads/1/3/1/4/131437875/1488411.pdfIn PDF document text
    • https://cdn.sqhk.co/gozawelesutu/hf1Kiee/14640158527.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwilaj/fOUihia/mindset_quotes_carol_dweck.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492580/normal_60003bd8292cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486984/normal_5fcc1ddf83d7f.pdfIn PDF document text
    • https://lexugorubu.weebly.com/uploads/1/3/0/7/130776619/580720.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470223/normal_6003ce268a3a3.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_off0000c803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC803 5412 bytes
SHA-256: b4ea5bfe35275d3b31c3a41bddc368de0a27746e9c09c2bae556a9dee7949038
font_01_sfnt_off0000da55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA55 10076 bytes
SHA-256: 11180fe2c93b9609f5412b516ca911de49ce258ae48e2d17b7cd36ce82209e09