Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2edfe38e2d7aec7…

MALICIOUS

PDF

76.5 KB Created: 2021-01-08 12:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a097e89da0288c5be27a76b3da78f8fc SHA-1: b9b939285dfb1897c6491877f3aedc16e832c3d6 SHA-256: b2edfe38e2d7aec767134f6c69fdcdf7e5ae0544807fa21aa4ad4e22a869865d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://traffking.ru/123?utm_term=bridge+to+terabithia+film+study+guide' is the primary indicator of this malicious activity. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, consistent with phishing or malware delivery.

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=bridge+to+terabithia+film+study+guide In PDF document text
    • https://static.s123-cdn-static.com/uploads/4464068/normal_5fe56b337a41a.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/xirixepo/30692759066.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/jixev.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/diablo_2_lod_full_game_blizzard.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cee1eec-c58b-4d8b-9ed9-6f4eabb2fddd/ffxiv_raise_macro_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/974f1488-9efc-4dbd-a9bd-82a0642bbd65/58656027294.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/amazon_prime_now_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/baby_bed_sheets_walmart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acc59d7e-0bb0-4419-94ca-7444d32d9d22/fuvisasog.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/10622276822.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/dupusilaf.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/mastering_chemistry_answer_key_chapter_2.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_off0000ee0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0B 5612 bytes
SHA-256: 50417ce84bb7ef19f22315fb04e25ed234d382ccfe6713de9ced239c344c02e1
font_01_sfnt_off000100fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100FE 10720 bytes
SHA-256: fcdc61b2233d5a4d09eba6ef405101b242975940c10f985933f79b514afc3a1c

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