Malicious PDF — malware analysis report

Static analysis result for SHA-256 e835093ad7795686…

MALICIOUS

PDF

70.8 KB Created: 2021-03-04 03:52:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 98136746fbe4e176908d364c3f980419 SHA-1: 7bcb012c1484475759eb4522f1ec075b64826c51 SHA-256: e835093ad779568617b87b29c29ab68655029c54cba17b16d58f4f7fbde1247e
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://botokaw.ru/award?keyword=kin+prefix+definition PDF link annotation
    • https://cdn.sqhk.co/dewufidabo/hahaji6/how_to_use_ar_effects_on_tiktok.pdfIn PDF document text
    • https://nafogoke.weebly.com/uploads/1/3/4/7/134776139/rosetekijefo.pdfIn PDF document text
    • https://cdn.sqhk.co/mumeriretepi/jbJAhc4/35503121866.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/gekLhcx/fozimagexepox.pdfIn PDF document text
    • http://xajavawinereko.mywebcommunity.org/que_es_la_liderazgo_definicion_para_nios.pdfIn PDF document text
    • https://vedagerirujo.weebly.com/uploads/1/3/6/0/136055295/roronunukusugadak.pdfIn PDF document text
    • http://motawosofi.iblogger.org/nalosobejulukul.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/yusiarc/one_clue_crossword_chapter_41_answers.pdfIn PDF document text
    • http://naxajogilelog.medianewsonline.com/jubutagawozeratu.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/9104137034.pdfIn PDF document text
    • https://cdn.sqhk.co/vegedusovo/fYvjjgf/out_of_the_loop_idiom.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/mexijegedakol/abcd_2_videos_mp4_pagalworld_com.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/open_app_in_safe_mode_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/vintage_afternoon_tea_menu_template.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/sole_e25_elliptical_reviews_reddit.pdfIn PDF document text
    • http://werewej.epizy.com/addition_for_grade_1_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/tolegeweg.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_off0000db16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB16 4652 bytes
SHA-256: 0c97b5414f31ad8f03f3483c1719e025a9146370ea27afe46442765537da10ec
font_01_sfnt_off0000eb00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB00 10376 bytes
SHA-256: bb2a7978fb07b68a1dd44c84b1ce5e9626a5e2ba8adb9b8d34270125a0079af9

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