Malicious PDF — malware analysis report

Static analysis result for SHA-256 99f3281f83e8292d…

MALICIOUS

PDF

85.0 KB Created: 2020-12-01 20:28:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 1728cd00309b7f64af35eb98e9207dc9 SHA-1: dfe5620111cd6cec21a448343839c8641b389440 SHA-256: 99f3281f83e8292dc24e80d38a1563dcd4a697ff923b50ed58dd5a9362d553b5
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 'https://traffking.ru/123?utm_term=tiempo+los+angeles+chile'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=tiempo+los+angeles+chile In PDF document text
    • https://cdn-cms.f-static.net/uploads/4412396/normal_5f96020a7a851.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370071/normal_5fc61d5448e41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f8ca4f1e2806.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f899ddcba44e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5fb2ed983baeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a9162f1-b3b6-4f63-a67a-e16d232cbcef/27172847680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90d066c2-de33-491e-af4b-bc4e1a9f3fae/fifekimufikabavazini.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/business_planning_process_in_entrepreneurship.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fd9af9866f3fd2d4d777/t/5fc43e6ecb3e0f5771d69271/1606696558902/49019047177.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4a1e08845d0924807ea3/1606371870912/marijuana_botany_an_advanced_study.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e627116eb00e3c4beed8/t/5fc3785abc819f1cf4452a39/1606645850894/49315180005.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_off00010cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CAE 5200 bytes
SHA-256: 5f4618cdd32693bcc8abaa653331e7c6be3de8652037d1d1b0853198a39f4a42
font_01_sfnt_off00011e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E3A 12064 bytes
SHA-256: 6ca377e9e6d6f6efde924303d622fcc1c2dc0f947c4a99389c44ae076d742307

Open this report in the interactive analyzer, or submit your own file for analysis.