Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be6894082551b7d…

MALICIOUS

PDF

88.9 KB Created: 2021-03-06 08:43:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 38ea363461456126035a5465d65ae414 SHA-1: b29be0ca4446bbd69fe91431d47ca2cafddb2b82 SHA-256: 9be6894082551b7db00f9f17055c60cce1dbfaba6af7c23fadf6d03bc3150718
136 Risk Score

Malware Insights

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

The PDF contains a lure related to computer hardware specifications, which redirects to a suspicious URL identified as a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to lead the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=msi+870a-g54+cpu+support+list PDF link annotation
    • http://bosemefawixuwov.mypressonline.com/73115671440.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462732/normal_5ffdb6633c304.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420760/normal_5fca26090f8a3.pdfIn PDF document text
    • http://pagavopalubutu.scienceontheweb.net/satapekasibaxija.pdfIn PDF document text
    • http://kudukudimox.sportsontheweb.net/how_to_fold_heart_with_square_paper.pdfIn PDF document text
    • http://gixodugesu.medianewsonline.com/pudogek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479678/normal_5fddc1c93891c.pdfIn PDF document text
    • http://italywow.space/74378335109v57ve.pdfIn PDF document text
    • http://voiprormul.xyz/alcatel_litespan_2000_manuallvrts.pdfIn PDF document text
    • http://bilkan.fun/difference_between_eluviation_and_illuviation0sff3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478933/normal_5ff2076826b80.pdfIn PDF document text
    • http://peludofnor.fun/47223986802fkwv3.pdfIn PDF document text
    • http://sodalabs.pro/zanaputkeyz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417030/normal_60053a15da64b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/how_do_you_change_the_4_digit_code_on_a_schlage_lock_fe595.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/vertical_scalability_in_performance_testing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cca5d69-34d9-4b6a-b834-be674b94d3ca/sony_dcr-sx63_usb_cable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aabdf04-1e4d-4dda-8ff5-c5f8aeefe8e4/how_many_volumes_is_vinland_saga.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/bronchiectasis_sicca.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5972e669-ab71-4356-ba0d-57b0f3c22f5d/2790888651.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/akinator_mod_apk_revdl.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000127a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x127A4 26040 bytes
SHA-256: 907c841896696b67f72eb457cf7d79afbee1e0a086b46885ad3e4137d9b0e3a8
font_00_sfnt_off0000ede0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE0 5764 bytes
SHA-256: 7609a24e948d41377093038b25c4e5a3cddbaafc6e329965551a135b4ba8b812
font_01_sfnt_off000101b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B7 11164 bytes
SHA-256: bb491883ff9e5cf505ad9b00c2d6acde0bcdd2c385d3e4d52fca87c3c10a20eb