Malicious PDF — malware analysis report

Static analysis result for SHA-256 d18e414d22afe861…

MALICIOUS

PDF

68.5 KB Created: 2020-12-04 05:46:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 720db105d04664f06f77c2ce40cc6ff2 SHA-1: b3d5c2a4db87378df6d1e1e42ecb57e9a396ddcf SHA-256: d18e414d22afe8614de8c6a286b9abdaced5223eb55a29252dc9caff04a6f71b
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?utm_term=letter+of+withdrawal+from+college+due+to+illness PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451565/normal_5fa95137257c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417128/normal_5fa73eb6cf337.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417824/normal_5fa3eb24eaa02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373749/normal_5fbd840ca061d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2b246df132613bbc941e4/t/5fc97bb63ff94c207efe1ffc/1607039926751/ruvosujojilewazuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a59f7734-49bb-41f7-9cfa-47976304d0c3/bomazuduxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e89a400-4393-4b55-90c8-1be0373fa371/alaska_guide_creations_hydration_pack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/428f2a13-8d37-44bb-b345-184e7f2378ab/27075442297.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/blackface_naija_lifetime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0018e3cf-254c-4bf8-9450-0a7c46163548/govudusoditufopakasaguwa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4f91fa3bf4b14abc32683/t/5fc852736031f473861be2d8/1606963828567/44211431572.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3edbfa04221c71ec888b/1606303451804/xivulamegoroneka.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_off0000cef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF8 5468 bytes
SHA-256: 8833a6ccdbd539d31084773ba56139360b71ee9344191b786d2faadadd055d28
font_01_sfnt_off0000e17d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17D 10500 bytes
SHA-256: cd40536137d58aed006842ba94c6c4babf0c8ac842eadb07852c106a4f20ce02