Malicious PDF — malware analysis report

Static analysis result for SHA-256 a73204c3e11a014b…

MALICIOUS

PDF

87.0 KB Created: 2021-03-17 03:48:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 679e15ea3357d46171f6dc1d85b01ae1 SHA-1: 664417964e6c11fbb4ba5ffb9f5e05c1a68eb0cc SHA-256: a73204c3e11a014b3170364080fe176e743664ff367988479dd073c7894bf19a
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a site offering a pirated music album download, which is a common social engineering tactic. The presence of embedded URLs and the nature of the content suggest an attempt to trick users into visiting a malicious site, likely to download further malware or steal credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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
  • 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://baarspo.ru/wix?keyword=nas+the+lost+tapes+2+album+mp3+download PDF link annotation
    • https://cdn.sqhk.co/busibelifiv/ghqiet8/java_tutorial_for_android_beginners.pdfIn PDF document text
    • http://rijoginijamibeg.mypressonline.com/pdf_sample_download_file_7mb.pdfIn PDF document text
    • https://cdn.sqhk.co/pesasotiro/ia8gdS3/always_on_display_huawei.pdfIn PDF document text
    • http://ladunosim.sportsontheweb.net/biotic_community.pdfIn PDF document text
    • http://jixewelo.scienceontheweb.net/is_there_a_fifty_shades_freed_from_christians_perspective.pdfIn PDF document text
    • https://cdn.sqhk.co/zusegekum/jcilQZN/amazing_powerhero_new_york_gangster_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/f7jpyid/97262837597.pdfIn PDF document text
    • http://gejurabek.getenjoyment.net/69833059396.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/exercice_corrig_bascule_rs.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxowowi/ighgmhe/sewaxidisizeda.pdfIn PDF document text
    • https://cdn.sqhk.co/dulinifijal/gf06Xjd/81472948890.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/ulhchgh/word_link_footer_to_previous_section.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/vovopafubipu/rmlau_back_paper_date_sheet_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8de273be-c0eb-4bbb-8e08-ba2d3bd3c3f0/ingenuity_inlighten_2-in-1_cradling_swing_review.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/fofexalovasoluzerikexa.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/ketokosujolukira.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/22054087332.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/53605290729.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/furodagugemowapexab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a81a52fb-9870-45f9-83f9-6d08416f6e32/20147812324.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/76273154568.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e5ed3aa-6a66-4e28-a0c6-a4b25623b8d2/23198399798.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/online_bengali_story_books_free.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE9 5432 bytes
SHA-256: 295e2d045c2c2d9a9852a8a6d58cf2029545dde63e78831ffd91dbb62fd7b03b
font_01_sfnt_off00010150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10150 12228 bytes
SHA-256: 7a6bd6b66b4210207ac533483450f33808a6ccdf9e9da2018a946fb8f4228dbb
font_02_sfnt_off00012ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE0 16060 bytes
SHA-256: 1a51fac5cecc05d5f0a5d3b698ffe240ccab470cdba6a823ba27c6c2a12c20dd
font_03_sfnt_off00013f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F76 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f