Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb6fa61282aba9e…

MALICIOUS

PDF

81.1 KB Created: 2021-03-24 22:45:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 5b060b51bb2c913dcf0df004016f605f SHA-1: 079b3cebd2ca03ce09891adfd8c79d1fb2529c3d SHA-256: abb6fa61282aba9ee7b1e763c2f25924dd2d9284d79cd002cfc392eff0c622bd
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains embedded links pointing to known malicious redirector infrastructure, specifically 'https://dafemum.ru/123?utm_term=ngaqonywa+amapiano+remix+song', which likely serves as a lure to a phishing or malware distribution site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of embedded URLs indicates an attempt to direct the user to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://dafemum.ru/123?utm_term=ngaqonywa+amapiano+remix+song In PDF document text
    • http://businessmentality.com/thermodynamics_textbooku7kd0.pdfIn PDF document text
    • http://ig-copyrightviolation.com/majefaxatexanisezi40kqq.pdfIn PDF document text
    • http://sepoxudozixo.sportsontheweb.net/rolipuzosezan.pdfIn PDF document text
    • https://cdn.sqhk.co/rigepasemapa/giBwWNA/zombie_commando_paintball.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/HqIxahf/song_lyrics_da_doo_ron_ron_crystals.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392668/normal_601a48c7456f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420245/normal_602e25a0d4dc8.pdfIn PDF document text
    • http://wulutano.mywebcommunity.org/74059775462.pdfIn PDF document text
    • http://iranomics.com/harry_potter_book_set_price_philippiness9k83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493920/normal_6039f64f31415.pdfIn PDF document text
    • http://8bitbeardsco.com/serezuxoxq9i2k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487381/normal_602f2dc068fc9.pdfIn PDF document text
    • https://cdn.sqhk.co/gorubabor/TvhiPhg/video_editor_lyrics_app_android.pdfIn PDF document text
    • https://cdn.sqhk.co/woxiwokujuwe/aSjcEgg/runescape_halloween_2020_famine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mojivikapeti/cara_membuat_email_baru_di_gmail_android.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/88689899795.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/wonaketuxeruras.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/bible_software_for_computer.pdfIn PDF document text
    • http://noratev.myartsonline.com/safety_insurance_glass_claims_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/factorio_bob_s_mods.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/tagosibexugetojov.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/gotikudekoxupavovuxuna.pdfIn PDF document text
    • http://lexekuduwowig.atwebpages.com/karl_marx_communist_manifesto_malayalam.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/how_to_find_wifi_password_in_cmd_windows_7.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_off0000f2a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A9 5172 bytes
SHA-256: a2f55c1c6855951b4f3834c856d7cb40ae130becb2b47f44114b21e07cf42d40
font_01_sfnt_off00010436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10436 10872 bytes
SHA-256: c43930cec6334810c5c075391ef656e3631bc5550ce0195e95d6c8ca9d9fad2f
font_02_sfnt_off000128fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128FE 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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