Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c7b4647db77a703…

MALICIOUS

PDF

69.3 KB Created: 2021-02-15 19:06:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ab37af38a55fd6ff832bbee916665a27 SHA-1: 61ce31867dab466552a04a58f6c7ebdf1aa0e588 SHA-256: 4c7b4647db77a703bdb4274a4af752e98a6268e637d9049b9dcf469311aa3924
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://maypoin.ru/wix?keyword=samsung+model+number+rs25j500dsr+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477638/normal_6012b6526cfeb.pdfIn PDF document text
    • https://rumefonurotu.weebly.com/uploads/1/3/0/7/130740232/waduv.pdfIn PDF document text
    • https://malabukepi.weebly.com/uploads/1/3/0/9/130969546/2317666.pdfIn PDF document text
    • http://fortuneo.biz/pivimu923pu.pdfIn PDF document text
    • http://luminar4-download.xyz/bomaxilaxome9dxmu.pdfIn PDF document text
    • https://bemakidej.weebly.com/uploads/1/3/0/7/130739127/nujig.pdfIn PDF document text
    • https://balejumefem.weebly.com/uploads/1/3/0/8/130814467/f46d760237b5a02.pdfIn PDF document text
    • http://tgesheff.xyz/teddy_bridgewater_injury_reportpslwg.pdfIn PDF document text
    • https://sirewuri.weebly.com/uploads/1/3/5/2/135298631/4b9cf60fe2.pdfIn PDF document text
    • https://gazodajatara.weebly.com/uploads/1/3/2/7/132712558/tosudakanozo.pdfIn PDF document text
    • http://fredo.run/have_to_exercises_macmillan1tv73.pdfIn PDF document text
    • https://gososeru.weebly.com/uploads/1/3/4/5/134597059/1eecd.pdfIn PDF document text
    • http://mstmail.space/99158986900u9q5a.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/didowugorokirug/beneteau_oceanis_350_owners_manual.pdfIn PDF document text
    • http://ruriwujuvuwa.epizy.com/contract_of_employment_template_doc.pdfIn PDF document text
    • http://daporanil.epizy.com/siwux.pdfIn PDF document text
    • http://kitakel.epizy.com/azhage_azhage_ringtone_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/53285929929.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/nier_automata_pc_patch.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_off0000d0c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C7 5864 bytes
SHA-256: ac20bcd1ac1bf1d4b36a684de33bfb4818942908185610b5d7d0b2fdcbfc167a
font_01_sfnt_off0000e4a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A3 10292 bytes
SHA-256: 11c930f7c232a4a48a6c9065b05be5420567125e6e92520d7fe06deb040c4448