Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5718d2ace0b232…

MALICIOUS

PDF

74.7 KB Created: 2020-12-27 04:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 20fe2ce79c93153f4c44443a4d1b8ccb SHA-1: 041f86562040602a58afda25a90b772b9b877af1 SHA-256: ba5718d2ace0b23279a92233f4c0ee92ef26325accdc398abbf8658b58cf64c5
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of malicious URLs suggests an attempt to lure users 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://ggtraff.ru/strik?utm_term=solfaread+apple+store In PDF document text
    • https://cdn.sqhk.co/maxolavoweje/pjfjeRp/las_vegas_transportation_to_grand_canyon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388169/normal_5f9460e4799e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448339/normal_5fb948a888bbc.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/ievghHT/box_office_collection_2020_worldwide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452588/normal_5fa4077a70a67.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/gMhj42m/monster_hunter_rise_amiibo_pre_order.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/687ffa5c-a9e5-48ed-bcc3-40ea7d19a260/teronodekereve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f69bf2f9-9556-412b-8692-c42ec6c2b3c7/lutagog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ecf4c29-2fca-406b-89ec-fc0d88fb1989/81835285536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90489f4a-8957-419d-b8d4-af7222b47015/wunuwikuxaza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0aa1c3c-f62a-44c5-bb1f-ee908f1b014e/nadcap_pre_audit_assessment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27c128f4-5afd-4a2b-90ac-35a0030bfc55/50880983304.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D0 5136 bytes
SHA-256: c205ee4d5ba7c69c7ca5e14d486c9007960f952a4b1b44829bb275828069d75b
font_01_sfnt_off0000f955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF955 10760 bytes
SHA-256: 2c3d88a921fb5ecb1a27dc81a1545c95eac09b4395a17064c936b5b5aa1bd1e9

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