Malicious PDF — malware analysis report

Static analysis result for SHA-256 711ca31425f1f17b…

MALICIOUS

PDF

69.9 KB Created: 2020-12-26 07:25:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d00aaae9334d557380e571f29f49eede SHA-1: ee3ebf84d40293c358fffc8a1154163630b1982e SHA-256: 711ca31425f1f17bdb763372e94d9133178bb96b00592b996eb00429188f2db2
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to malicious content, likely a second-stage payload or phishing page.

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://cctraff.ru/strik?utm_term=need+for+speed+rivals+cars+fully+upgraded In PDF document text
    • https://zusiwugebibod.weebly.com/uploads/1/3/4/4/134484471/sisavevof.pdfIn PDF document text
    • https://cdn.sqhk.co/ledumixifer/Jt3ictY/best_craft_furniture_mountain_wi.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/Zic3aan/vafofusutexogixa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404741/normal_5f9fd5ea290c5.pdfIn PDF document text
    • https://gazuxupoje.weebly.com/uploads/1/3/4/1/134108966/4297196.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/LQhgcNv/download_clash_of_clans_apk_for_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421214/normal_5fada21789067.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/09471ff5-93d5-420c-869f-afac4cd671a6/goviwidoroturax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/900a27ae-b1ec-4f5d-9177-86ffa178ec4c/19068445135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c062c3b3-4eb1-4c95-b735-9536a5235bea/44085954674.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/59624294847.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_off0000d49c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49C 5452 bytes
SHA-256: f863018b90248bc0b1828c2a354284c67578142dbc0ef3aad15ca27e58f6e9e2
font_01_sfnt_off0000e753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE753 10388 bytes
SHA-256: 5e8f0e31a70ca79189a7ec3eb56a034a040320a64c0f7ba38afc6429a35cd57b