Malicious PDF — malware analysis report

Static analysis result for SHA-256 1306c265898b6ced…

MALICIOUS

PDF

67.0 KB Created: 2021-03-01 03:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 2d46dc383e7163b45fb4ecf7c7eca231 SHA-1: 8e8c1ec1892c46256a213e8100e87a1f406685b4 SHA-256: 1306c265898b6ced8fbf6b7d0d17be279ebbeedc97779e26b5971b7c444fe2b7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs that redirect to a link farm, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

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://pelibifir.ru/wb?keyword=tappan%20stove%20knobs%20white PDF link annotation
    • http://lirinevewafa.mypressonline.com/mexamebak.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/83921138049.pdfIn PDF document text
    • http://fastdonwload.space/12796756210hpsth.pdfIn PDF document text
    • http://steblin.pro/xamewidig6f42j.pdfIn PDF document text
    • http://viruxego.mygamesonline.org/how_to_install_rheem_tankless_gas_water_heater.pdfIn PDF document text
    • http://brightshopbg.xyz/4459835674in51o.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/words_their_way_assessment_paper.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/33259549818.pdfIn PDF document text
    • http://netzamka.ru/books_like_one_night_at_call_center4j6ak.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/barbie_house_decoration_games_play_free_online.pdfIn PDF document text
    • http://lubenoredeji.mypressonline.com/30382298447.pdfIn PDF document text
    • http://wamipivifubape.sportsontheweb.net/tutorial_adobe_after_effects_cs3_bahasa_indonesia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://teruwisap.epizy.com/19097542567.pdfIn PDF document text
    • http://bazejufojowopor.epizy.com/reinforcement_and_punishment_worksheet.pdfIn PDF document text
    • http://nosigegu.onlinewebshop.net/16340275216.pdfIn PDF document text
    • http://jenepopavuse.epizy.com/fireworks_harry_potter_piano_sheet_music.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFED 4872 bytes
SHA-256: ec7514006a40e6238ed705c47b70ecbb95bed84c0872867c26b83eb2ca2ae15d
font_01_sfnt_off0000d085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD085 9556 bytes
SHA-256: 6c5bdbd44fb21cd6db37ba1922a0212fa57b999b9e8b6f65f747db257692398d
font_02_sfnt_off0000f127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF127 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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