Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e97fed950f7dfb6…

MALICIOUS

PDF

105.6 KB Created: 2021-03-22 17:31:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 9ec78afb0c76f9706fa4ea8e46644e93 SHA-1: 1dd9e648fdbeb06f27ef8f9accefbe1e08e6a2a6 SHA-256: 1e97fed950f7dfb6de90c6705cb2e0c0c92520ad9053936aedfc8c28f6417c25
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL leading to 'jumiwimov.ru'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. The presence of embedded links suggests an attempt to redirect the user to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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://jumiwimov.ru/wix?keyword=yugioh+serenity+voice+actor PDF link annotation
    • https://karopokonu.weebly.com/uploads/1/3/4/5/134519394/9840986.pdfIn PDF document text
    • http://twoup-viktoria.online/29914994002w6q7g.pdfIn PDF document text
    • https://paxuwuberuluza.weebly.com/uploads/1/3/1/3/131380725/70dbf6afefdab39.pdfIn PDF document text
    • http://presalon.xyz/gavotte_clarinet_sheet_musicv0d0a.pdfIn PDF document text
    • http://dostafood.xyz/14309356546y2pow.pdfIn PDF document text
    • https://losanuritajog.weebly.com/uploads/1/3/4/7/134730792/8c3bed9798db7b8.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/cable_tray_standardserudp.pdfIn PDF document text
    • http://crispyset.online/92117417512o84u1.pdfIn PDF document text
    • http://verifiedbadge-lnstagram.com/tough_solar_g_shock_reviewdurs6.pdfIn PDF document text
    • http://generatorsale.ru/jelojetadawozl19b9.pdfIn PDF document text
    • https://lefexaro.weebly.com/uploads/1/3/5/3/135324439/2f43c3a3bb.pdfIn PDF document text
    • https://tovorugezix.weebly.com/uploads/1/3/4/5/134599805/zulilate_seveg_zozevinopoti.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/banula/79665407066.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/95346929780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22971347-7646-4b83-ba0a-632af5cb58ad/wikegog.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/farm_animals_coloring_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/magic_c_letters_worksheets_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6946127c-0fe4-4a42-9ed0-881dd2f728b1/cinnamon_black_walnut_ice_cream_recipe.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/mexozawananixuvig.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/chamara_ranawaka_mihithalaya_album_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/aila_aila_tamil_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wolawatin/free_bootstrap_templates_for_corporate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7cb0f85-2d56-472c-8616-5f2181bd1136/timeshare_french_riviera.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/aga_guidelines_chronic_constipation.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_off00015c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C3E 5152 bytes
SHA-256: c29b6f9b6f968f7bac8f926a960d7476939f006e9175b1b4e13f52c7cf03c8ac
font_01_sfnt_off00016ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DDB 12596 bytes
SHA-256: 7334437d49934e3084cb249252d70139c6884b03c9cffa58429cfcf7191c0ec0

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