Malicious PDF — malware analysis report

Static analysis result for SHA-256 47545f71eec914f0…

MALICIOUS

PDF

75.4 KB Created: 2021-03-09 18:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 1346c0b6342a344de10e67bee99108d9 SHA-1: dd2729caa36ff8395737a2152aa42b0ba6541a57 SHA-256: 47545f71eec914f03f917138621e896c4187a55aca620300bdce870a8420e8bd
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 part of a link farm strategy, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=blackweb+bluetooth+manual PDF link annotation
    • http://healsmall.space/how_to_loot_really_fast_in_rustpfe04.pdfIn PDF document text
    • http://tehnopolis.org/what_is_the_boiling_point_of_isopropyl_alcohol1ie12.pdfIn PDF document text
    • http://laxana.ru/57363662427pzzkv.pdfIn PDF document text
    • https://lenexemumuvag.weebly.com/uploads/1/3/1/4/131438583/vajenab-kidapep-sefesezasafawul-visidila.pdfIn PDF document text
    • http://meinekarten.best/50104417097gy9cy.pdfIn PDF document text
    • https://tesujirigagorin.weebly.com/uploads/1/3/4/8/134869290/fadomubewilivu_kesunovesudez.pdfIn PDF document text
    • http://salet.store/gomevulupuot0l6.pdfIn PDF document text
    • https://zonilalafujagep.weebly.com/uploads/1/3/4/7/134731182/zoxurokofijevon-digesipesigop.pdfIn PDF document text
    • http://knitfqph.site/how_to_improve_cultural_competence_in_nursingbn1yr.pdfIn PDF document text
    • http://elinekici.online/how_to_start_craftsman_air_compressor7dnwu.pdfIn PDF document text
    • https://diwowure.weebly.com/uploads/1/3/4/5/134592565/mabideli.pdfIn PDF document text
    • https://funebaxap.weebly.com/uploads/1/3/4/3/134399245/dukujubagaku.pdfIn PDF document text
    • https://kunolutupevuj.weebly.com/uploads/1/3/4/7/134772201/59e2fa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zepenolewiri.epizy.com/jevarufufudavigesedovi.pdfIn PDF document text
    • http://josekopiguvalup.epizy.com/49410985329.pdfIn PDF document text
    • http://xerivigop.rf.gd/fender_princeton_chorus_dsp_review.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/adobe_flash_professional_bagas31.pdfIn PDF document text
    • http://xakosafejel.epizy.com/polarization_index_test.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/bushnell_binoculars_10x50_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/garfield_2_movie_tamil_free.pdfIn PDF document text
    • http://lenopebimuzisit.rf.gd/95490994700.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/auping_bedlamp_transformator.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_off0000eb8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8D 5112 bytes
SHA-256: 35a9e8cd34ef60457097bbfbd559023e0d6a19187993c5dc6133419342e60af0
font_01_sfnt_off0000fce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE5 10368 bytes
SHA-256: 2367ce4431d2ff3e7a2a0ab79578088d5a0b74bbe9029c903cd948d921f697f0

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