Malicious PDF — malware analysis report

Static analysis result for SHA-256 993c76051fbd7f32…

MALICIOUS

PDF

61.6 KB Created: 2021-01-15 07:04:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 71d1576f112bfd47aed6342241a2861d SHA-1: 9834f090ef2b6767e9ba2a2133958affab3a6a51 SHA-256: 993c76051fbd7f32cd249378cf619fd1fd4591cbd65b3596b4e96aa8640b50c1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for free movie downloads, likely to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/aws?utm_term=anand+telugu+full+hd+movie+free PDF link annotation
    • https://cdn.sqhk.co/vujagefamig/2d29n7W/revomudazinelazanabon.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/m8Bgjjh/tumenuligox.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiwuximu/0he7Gjf/39508241170.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/ghhuM4N/golonituvezarujakege.pdfIn PDF document text
    • https://cdn.sqhk.co/zumovinej/BviCsif/baby_heartbeat_apk.pdfIn PDF document text
    • https://site-1172574.mozfiles.com/files/1172574/world_capitals_and_currency.pdfIn PDF document text
    • https://cdn.sqhk.co/jisanipu/SL1jcjj/28752276836.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/gjjghdb/rexville_ny_country_store.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/jazofi/38143436696.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/destiny_2_forsaken_weapon_mod_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/states_of_matter_worksheet_7th_grade.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB281 5192 bytes
SHA-256: 7c60513436a34511dcb79eb8c75ae891301d08f3dd0ffac1b2b44cd0c21bd8ab
font_01_sfnt_off0000c40a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC40A 10764 bytes
SHA-256: fbc27fde0f9ade6a03932aad3657e6f63e08a5bf41c3a0dd92367f4824f9065f

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