Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d467f579552ace2…

MALICIOUS

PDF

82.2 KB Created: 2021-03-30 12:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6107f723271064312b0e4260d5f1491b SHA-1: 7f1e447b62bb1e34e91e8c4aa5b41e7a01905b40 SHA-256: 2d467f579552ace2a3fc76ec4435e23bdf350428191ed927a535bd081199fe28
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The primary URL, 'https://fokemale.ru/award?keyword=romeo+and+juliet+theme+quotes+pdf', suggests a phishing or scam attempt disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://fokemale.ru/award?keyword=romeo+and+juliet+theme+quotes+pdf PDF link annotation
    • http://lezofifividex.scienceontheweb.net/15362211945.pdfIn PDF document text
    • http://dalosizofovabes.medianewsonline.com/what_is_a_netgear_prosafe.pdfIn PDF document text
    • http://rotiwopofeze.mywebcommunity.org/lekifewuvugep.pdfIn PDF document text
    • https://nefolebar.weebly.com/uploads/1/3/4/4/134400051/6911386.pdfIn PDF document text
    • http://dejijesumewir.22web.org/orao_so_miguel_arcanjo_21_dias.pdfIn PDF document text
    • https://dapazigozasonim.weebly.com/uploads/1/3/4/4/134466252/1238123.pdfIn PDF document text
    • http://zemesod.getenjoyment.net/pdf_autoestima_alta.pdfIn PDF document text
    • http://pepariravifaza.getenjoyment.net/54578340374.pdfIn PDF document text
    • http://lalabomujulimof.mywebcommunity.org/mosakoxedunikigumakexi.pdfIn PDF document text
    • http://vofufime.mypressonline.com/bosch_300_series_ventless_washer_and_dryer.pdfIn PDF document text
    • http://lifelalulenomip.mygamesonline.org/xibowidodaj.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://wonanikapudidak.atwebpages.com/salirigap.pdfIn PDF document text
    • http://malebowepapin.epizy.com/dobumivotifapi.pdfIn PDF document text
    • http://watusatuvor.myartsonline.com/8290688561.pdfIn PDF document text
    • http://segotemit.rf.gd/auto_insurance_comparison_worksheet.pdfIn PDF document text
    • http://kipejefanowisu.atwebpages.com/list_of_caribbean_countries_and_capitals.pdfIn PDF document text
    • http://jinugiwi.atwebpages.com/vertical_farming_journal.pdfIn PDF document text
    • https://9df6e0af-a028-4e88-91ba-61a1b37318d5.filesusr.com/ugd/7c1f05_376ab16e27c34f9b93e7e73d58dd047f.pdf?index=trueIn PDF document text
    • http://mivurukelino.onlinewebshop.net/75594754881.pdfIn PDF document text
    • https://a694a867-b0fa-45cd-b082-7f9abf80b1a7.filesusr.com/ugd/430cb2_9c0f0c270ab94c9b8b29ef3d06abe227.pdf?index=trueIn PDF document text
    • http://jijazofar.rf.gd/naxazagitet.pdfIn PDF document text
    • https://d1ee23ee-9ccf-45b0-80ef-1e1ff1f657c4.filesusr.com/ugd/9ef0c3_0cbb32599a2b4e3fa8b06881ddd15203.pdf?index=trueIn PDF document text
    • http://nukivamo.myartsonline.com/magic_tree_house_55_release_date.pdfIn PDF document text
    • https://6cdb29d4-22ce-4aaf-9e51-562b59d50851.filesusr.com/ugd/1b20fb_5a69386249704067af8c2138524f7909.pdf?index=trueIn 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_off0000f4c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C5 5276 bytes
SHA-256: 72e33409672dbc8bb3e6d2c8ce9759836408b514036c874bdae7cbd9294bb626
font_01_sfnt_off00010692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10692 11616 bytes
SHA-256: 5827d0ad575df8f485fd3b5fa3536cf81da5c10a99424ea33ba369822e65372e
font_02_sfnt_off00012d00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D00 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e