Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c7f4e5ed9d6310…

MALICIOUS

PDF

81.7 KB Created: 2021-03-13 23:44:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 9220aeaa12d6ea0550c14736ad765f26 SHA-1: 31e24010955414f4922a0fe50b72a8f30be8bfce SHA-256: 60c7f4e5ed9d63100a1951690178c9d7dd00d01dc861b125def2fbf91407e4d5
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan variant. It contains numerous embedded URLs, with several pointing to suspicious or unknown domains, suggesting a link farm designed to redirect users to malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a network of disposable domains for hosting malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/wix?keyword=tupperware+measuring+cups+set+of+6 PDF link annotation
    • http://bu-markett.com/ziwaxonotejobipenusab9c0z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450151/normal_602b5d0f2deae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456398/normal_5ff899507a427.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/aol_app_for_ipaddw1gy.pdfIn PDF document text
    • http://nosilekexiwot.mywebcommunity.org/deadline_for_acca_march_2020_exam_entry.pdfIn PDF document text
    • http://unreguezff.rest/56885772492w9svw.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/kevelujewebozusapupefixo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416940/normal_6001cc6069e67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465257/normal_5fffb22f4eb82.pdfIn PDF document text
    • http://pidijajuwupurop.medianewsonline.com/lp_asma_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuxizowivu.rf.gd/logitech_harmony_300_software_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2aca118-f75b-40ab-b008-f943bda4285f/how_to_program_rca_remote_to_insignia_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/cell_growth_and_differentiation.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/ashrae_handbook_refrigeration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/180547dd-240a-4578-94ac-56a4c3e86275/sixiwepirokifuzusenula.pdfIn PDF document text
    • http://kipazafar.atwebpages.com/nosimudubulifemom.pdfIn PDF document text
    • http://medidadebi.rf.gd/nimepivewakaxazus.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/zoveligomitariji.pdfIn PDF document text
    • http://jenesigafepi.epizy.com/pojogedimeroturemuzof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f1a8fa5-a17f-406f-9555-59e8cbb20414/nolaziliti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5143fd8b-9303-49cf-807f-a72ea04812be/the_outsider_synopsis_episode_10.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/bottle_feeding_guidelines_nhs.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/91152154220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa22391d-346b-4365-8974-fd9cbe6bc9eb/windows_10_power_plans_missing.pdfIn PDF document text
    • http://dakunexafabeve.epizy.com/hunger_games_3_livre.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_off00010100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10100 5500 bytes
SHA-256: aabeb16818f44c632b7f9758a43cccfa518b9b9c072f5ced87d222a6eff50825
font_01_sfnt_off000113ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113BA 10592 bytes
SHA-256: d7fbb3595c49132a9f2b2bbb065bc9aa53c74508011d009884db57ad0abf9fa1