Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ad3d9e0b89d03a…

MALICIOUS

PDF

81.4 KB Created: 2021-03-05 01:02:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 93992bc6a46207fe3ca9df104cc5ca54 SHA-1: 9c95aa960766467ba82ac8be22249cc8a24efdb2 SHA-256: 26ad3d9e0b89d03ab002ba5db8b7fe295c696f77d1b7f4a2a8b300a547b05898
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The primary URL, 'https://ponafet.ru/wix?keyword=alien+hominid+unblocked+hacked', indicates a lure to search for game-related content, likely to disguise malicious intent. ClamAV and ML classifiers confirm its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • 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://ponafet.ru/wix?keyword=alien+hominid+unblocked+hacked PDF link annotation
    • https://lizakefamejoxen.weebly.com/uploads/1/3/1/3/131384135/jupof.pdfIn PDF document text
    • http://momarivido.mypressonline.com/what_is_the_hardest_sat_practice_test.pdfIn PDF document text
    • http://pozuvixa.getenjoyment.net/coolpix_p520_manuale_italiano.pdfIn PDF document text
    • http://wejaduz.mypressonline.com/lexelepadebafamopoluro.pdfIn PDF document text
    • https://nopeludaseji.weebly.com/uploads/1/3/3/9/133986928/100065.pdfIn PDF document text
    • https://zunepijubu.weebly.com/uploads/1/3/3/9/133986973/d48592f38.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/how_do_i_reset_the_wifi_on_my_echo_dot.pdfIn PDF document text
    • https://degevibuv.weebly.com/uploads/1/3/5/3/135316410/kelisidirezivop.pdfIn PDF document text
    • http://vepenuvix.mygamesonline.org/the_odyssey_book_2_study_guide_answers.pdfIn PDF document text
    • http://zakosemej.mypressonline.com/pukagot.pdfIn PDF document text
    • http://borejukeluteva.mygamesonline.org/how_do_i_get_serato_dj_pro_for_free.pdfIn PDF document text
    • https://lavabowigu.weebly.com/uploads/1/3/2/6/132682694/kevuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_de02a3cf21cc491eb85a7fb99ac503e7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebc55f28-ce73-4858-8397-806d9faca3d3/basogoxug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fea5765-2e54-4039-b668-e6238cda0888/mozilla_firefox_43.0_download_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46444e36-2acf-4eef-aca2-0ed1a45b24ef/yamaha_rx_v677_firmware.pdfIn PDF document text
    • https://0e8f88b9-656e-4b05-9cd8-8bd477f85547.filesusr.com/ugd/95b9ea_e16b649c4fb44c02beac219c5a009ef3.pdf?index=trueIn PDF document text
    • http://gixarewujedel.atwebpages.com/2002_ford_explorer_xlt_transmission_dipstick_location.pdfIn PDF document text
    • https://0dc5016f-38c0-4e11-84f4-4717e3ef4ec7.filesusr.com/ugd/4fd84c_31f17ea8241c42428debb073535e4333.pdf?index=trueIn PDF document text
    • https://0f0532cb-4478-41f9-91a1-cf277c4732ec.filesusr.com/ugd/8acad3_b86879f040e7498e9709601e03f2c654.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed9d4e6a-8774-4dc6-b371-ba6bb44f06b8/agile_software_development_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79fb2b8b-c73d-4103-a324-d83d11c66cf0/technical_analysis_trading_making_money_with_charts.pdfIn PDF document text
    • http://vakogez.myartsonline.com/mimupipufebegubavone.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF631 3836 bytes
SHA-256: 3de99084e6d19080150f1a0556dbdf879a34fc6bf6b78e00f689d646847527f2
font_01_sfnt_off000103d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D7 5100 bytes
SHA-256: 70201698894d57069b922a91c95cd373971c20491298bb8efa6c457848ff890c
font_02_sfnt_off00011505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11505 10240 bytes
SHA-256: f5ede821a1d72782dbffdffb6a9510f97a5bf3c5ed10175faffb147037c6070d

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