Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f63d391e8e8a882…

MALICIOUS

PDF

72.4 KB Created: 2020-12-20 10:56:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cab361ae2925a65e3428e14251424404 SHA-1: 90af6027cc64e31e92591c62dfabcf9a9fa7bcf3 SHA-256: 3f63d391e8e8a8820e2582fb41ed75031640fe61795f7163a38ff07ad7f5b5f0
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Xbox 360 wireless headset pairing', likely a lure to entice users to click the embedded malicious link. The presence of numerous embedded links suggests a link farm or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffmen.ru/strik?utm_term=xbox+360+wireless+headset+pairing In PDF document text
    • https://static.s123-cdn-static.com/uploads/4405925/normal_5fd076a673450.pdfIn PDF document text
    • https://webegerux.weebly.com/uploads/1/3/4/7/134759049/863f3e05e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387050/normal_5fd67cac5b4a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449603/normal_5fca64b238111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471682/normal_5fc35f7634104.pdfIn PDF document text
    • https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/1386370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370304/normal_5f908d9aa54e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421354/normal_5fa0c7a2235fb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/741a10d7-a1e1-46c3-8c18-ad33f230ad7d/nolarabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abf4b769-22d4-4872-8c2c-f68588e1d83d/divorce_because_of_schizophrenia.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/bahut_yaad_aati_hai_tu_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f89189d6-a8ba-4f5a-b0a0-1d231bed8754/pujuxivekegedetufedem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80441a9a-b92d-42d2-80ec-a93eec40744f/33517026937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f34842aa-c909-474e-ae91-f39e81c92c01/9979350281.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 4

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE8A 5748 bytes
SHA-256: dc77870b596dd19f969ad5b282a188a5e30185f4e4f016c0481b9905536ade9d
font_01_sfnt_off0000e20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20D 10652 bytes
SHA-256: 17180b3505897e2f8c56895896695cd920017ca81b29bc91d818208c99c50be0
font_02_sfnt_off000106b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B4 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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