Malicious PDF — malware analysis report

Static analysis result for SHA-256 97becc28613bb112…

MALICIOUS

PDF

63.5 KB Created: 2021-01-23 17:53:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0a8e5f6d2762cab1e5be63757883130c SHA-1: e6e6cecb20286741b34e255261041e669883eb89 SHA-256: 97becc28613bb1124a3a2072c2b6345c3185063f0983927ee68c5aceea7bce8c
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL indicates an attempt to lure the user to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=teaching+that+makes+sense In PDF document text
    • https://static.s123-cdn-static.com/uploads/4427313/normal_5fde814424795.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450870/normal_5ff91403ac91d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427103/normal_5ff6be170c246.pdfIn PDF document text
    • https://laxigotugib.weebly.com/uploads/1/3/0/9/130969680/xugak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416495/normal_60039bad5f890.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392210/normal_5fd23f32266f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420608/normal_5ffde5c08d42c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374520/normal_5feb1a05166d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382643/normal_5fed125c6d598.pdfIn PDF document text
    • https://site-1168218.mozfiles.com/files/1168218/jetpack_joyride_hack_download_android.pdfIn PDF document text
    • https://site-1166608.mozfiles.com/files/1166608/italian_love_song_lyrics_in_english.pdfIn PDF document text
    • https://site-1175422.mozfiles.com/files/1175422/international_phonetic_alphabet_2018.pdfIn PDF document text
    • https://datotumegodipe.weebly.com/uploads/1/3/2/7/132740351/b1d86ad49a927.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/wulotugadag/24127043412.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/american_airlines_pet_carrier_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/evaluating_algebraic_expressions_worksheets_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/best_free_stock_charting_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/bamboo_tencel_sheets.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_off0000c08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC08D 5096 bytes
SHA-256: 8d265f350ecaf222b9d33459af7832996112e95460a1f5e4d357cdba22ede717
font_01_sfnt_off0000d1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BE 9188 bytes
SHA-256: 1f7e02da0cc22bd9500d4aadb5cffc323cdb6610bfb1ffe457c1d0ed43409107

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