Malicious PDF — malware analysis report

Static analysis result for SHA-256 36485092140ab3d8…

MALICIOUS

PDF

77.8 KB Created: 2021-03-08 10:37:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6246a844ca1191c9532506414c9e3bc9 SHA-1: 5f3642796862962079f4b51b9e2ef06870e3ce1f SHA-256: 36485092140ab3d89d3d461c635479a4d35f7b8776a66c8b994ced560a6d66ff
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that redirects to a disposable hosting service, likely to host further malicious content or to act as a landing page for phishing. The document body, though partially corrupted, contains text related to search queries, suggesting a lure to trick users into visiting the malicious site.

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://midufefew.ru/wix?keyword=negative+correlation+examples+in+real+life PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4428035/normal_5ff9be2cd1f2e.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/is_international_mail_coming_to_canada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421339/normal_5ff8ee082bcc4.pdfIn PDF document text
    • https://muvanuxeb.weebly.com/uploads/1/3/4/0/134096654/7801603.pdfIn PDF document text
    • http://tusiteguluvora.getenjoyment.net/11_22_63_imdb.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/96272334287.pdfIn PDF document text
    • https://xokebewogaxuwu.weebly.com/uploads/1/3/4/5/134588239/sijagagafaveretoxor.pdfIn PDF document text
    • http://xelasurugopu.mywebcommunity.org/58066758642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467038/normal_603283b0bf896.pdfIn PDF document text
    • https://ragixadimeruwu.weebly.com/uploads/1/3/4/8/134897014/3644b9.pdfIn PDF document text
    • http://dizititakozazi.mywebcommunity.org/what_are_the_three_negative_effects_of_volcanic_eruptions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://27f1a270-5048-4778-87f0-574dfe85248a.filesusr.com/ugd/b7306e_92536de9a5224f9e83a51114dd98cdad.pdf?index=trueIn PDF document text
    • http://kikanelomer.onlinewebshop.net/programming_clicker_keypad_garage_door_opener.pdfIn PDF document text
    • http://bipitor.epizy.com/jilomimawerezofonipu.pdfIn PDF document text
    • https://183df7f2-4185-4ca0-bfcc-33b39bc842f1.filesusr.com/ugd/9ac34a_dee24ec321b541bb965f7cf0e8eaf8f6.pdf?index=trueIn PDF document text
    • http://dojafeduzig.myartsonline.com/2800427819.pdfIn PDF document text
    • http://mojabumenir.epizy.com/braun_multipractic_deluxe_food_processor_manual.pdfIn PDF document text
    • https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_0102f103b9114bee9ad7c2294b04aa64.pdf?index=trueIn PDF document text
    • http://jetotajasavesi.atwebpages.com/54960844721.pdfIn PDF document text
    • http://rixibedi.onlinewebshop.net/21630053407.pdfIn PDF document text
    • http://midetawedafete.epizy.com/xadanigozoxunofeba.pdfIn PDF document text
    • http://sulupajus.rf.gd/metewaros.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_off0000f2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CA 5432 bytes
SHA-256: 2172f81db7f8ab6302b88b7137a8fbee1440bbc69217e37683fed9b22449e443
font_01_sfnt_off00010548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10548 10660 bytes
SHA-256: df323c3f1ce05838ef6c4c7a8c90412263baf86a156d424a42d6cde19305de8f

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