Malicious PDF — malware analysis report

Static analysis result for SHA-256 9730e090e6b11171…

MALICIOUS

PDF

75.3 KB Created: 2021-03-21 04:34:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: cea58720bc10ed9e11f666b26d339408 SHA-1: 2201066b19a912bb7e58ee61419975ccb5c2a152 SHA-256: 9730e090e6b11171a8980500d4f4799f3395b9896a04d7172d2802eedb893f0f
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One prominent URL, 'https://golowaki.ru/strik?utm_term=the+secret+teachings+of+all+ages+illustrated+pdf', suggests a lure related to a book search. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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/strik?utm_term=the+secret+teachings+of+all+ages+illustrated+pdf PDF link annotation
    • https://figusemaf.weebly.com/uploads/1/3/2/6/132682639/9074825.pdfIn PDF document text
    • https://jaxurevinul.weebly.com/uploads/1/3/4/8/134868463/jelodosuguvulid-pidipimasikozi-lusubebejav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://netifikapiwi.epizy.com/tinumij.pdfIn PDF document text
    • https://b84c3727-5d5a-4c5d-9d5d-21cac87b3a69.filesusr.com/ugd/fdd6c2_a54de92e0c77453eb301860b96ad709a.pdf?index=trueIn PDF document text
    • http://gakuxalodakedaj.epizy.com/earth_abides_audiobook_download.pdfIn PDF document text
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_ed77ab6f78904cf6a32d5e6d26f967b8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/52593566538.pdfIn PDF document text
    • http://lamiredej.epizy.com/vans_old_skool_platform_checkerboard_black_white.pdfIn PDF document text
    • https://fe2b84af-b373-48e0-a714-f820169e3fe9.filesusr.com/ugd/ed1d2e_e578018d15304ed1a8350f0cef4fb61c.pdf?index=trueIn PDF document text
    • https://583009e7-2fe2-4909-8205-f91615733aad.filesusr.com/ugd/a298ce_74bb67f1e1f545fe8e1b723f946ff744.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/vopekifi.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/75420962053.pdfIn PDF document text
    • https://8f6f9f04-f977-4239-955d-f6aecf2dd879.filesusr.com/ugd/81cd61_2c8ae9d5840d43ac95dfc5d7f9598dfe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gapivegek/modadamejizirevazo.pdfIn PDF document text
    • http://godutiliwaganos.rf.gd/five_nights_at_freddys_2_rap_song_lyrics.pdfIn PDF document text
    • https://acd80754-3b70-42c6-a60f-3489f6261da4.filesusr.com/ugd/f1780b_15bfc82ae01047b5bd5e5144b098ea24.pdf?index=trueIn PDF document text
    • https://dcc20dec-0195-4543-b617-cfb82efd15f0.filesusr.com/ugd/30ea26_287ebe03b6c540fea960ce14e8889afa.pdf?index=trueIn PDF document text
    • https://4de1274e-a26b-4e71-a0d1-d86f0cfee7ee.filesusr.com/ugd/ee4d88_f63087d344b74ea490044528a9b427c7.pdf?index=trueIn PDF document text
    • https://2f2ab42d-e0b4-4bd3-aa50-2430da1ff5fc.filesusr.com/ugd/eaf48f_7a30d8865f7e458eb547bd781787d328.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE999 5368 bytes
SHA-256: 7503fde0e64d424536c44604948655e8aa2cecb2e8cfe62a30e9708080b03845
font_01_sfnt_off0000fbd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD8 10468 bytes
SHA-256: 461cd668981037520f32ecdfd6b30ecd73710b7e921deebf52ac88a5c2884c8f

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