Malicious PDF — malware analysis report

Static analysis result for SHA-256 101076a40618845e…

MALICIOUS

PDF

74.6 KB Created: 2020-12-28 21:10:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bac0a61e9afb82e24b660fa2a287aa23 SHA-1: df056fc8b8146491317e97be0ce677330fd0f5a6 SHA-256: 101076a40618845ec347af63cf46b8f64600ccefb9af07f77f1a606fa6716824
104 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan payload. The presence of a 'download button' heuristic and a URL pointing to a suspicious domain suggests an attempt to trick the user into downloading a malicious file. While no scripts were explicitly extracted, the PDF structure and external URI findings point towards a malicious document designed for initial access via phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffe.ru/strik?utm_term=famous+telugu+movie+ringtones+free+download
    • https://cdn.sqhk.co/wuvupalib/zjeV9jj/love_tester_real_online.pdf
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/addd5d5e0b64.pdf
    • https://cdn.sqhk.co/forokuxodel/P3I36hd/racing_moto_mod_apk_download_for_android.pdf
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/578063.pdf
    • https://cdn.sqhk.co/lisesemafo/jbjfhaI/42017411885.pdf
    • https://wopamogifit.weebly.com/uploads/1/3/4/3/134341426/8541179.pdf
    • https://gelujesu.weebly.com/uploads/1/3/4/8/134847850/nokijagalefovu-fakuxiv.pdf
    • https://texifafotolatip.weebly.com/uploads/1/3/4/7/134764930/vebekolugagaz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bed0f774-7dd8-4430-89b2-aade23357392/63990406728.pdf
    • https://uploads.strikinglycdn.com/files/b296b662-2845-43d5-b5d2-144b75999aa4/57686982912.pdf
    • https://uploads.strikinglycdn.com/files/ddc5e263-00fb-49fe-95d2-7bf7dec25c6c/gurexo.pdf
    • https://uploads.strikinglycdn.com/files/acdb1b53-0819-4ab0-8804-baab831c8849/eve_online_guided_missile_precision.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e82d.bin
540c99e1a3ace2504ea6f18fea40ce789ab03a55714aca792dd85780bfee5a34
pdf-font-stream PDF embedded font (sfnt) at offset 0xE82D 5336 bytes
font_01_sfnt_off0000fa52.bin
31cd69840e694b3780eb83f0bbdb8e4b8a1f2f59b75e87b6a28fa658d420ce16
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA52 10268 bytes