Malicious PDF — malware analysis report

Static analysis result for SHA-256 5401b55db8b0ba02…

MALICIOUS

PDF

65.8 KB Created: 2020-11-26 06:04:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 854c4ccd4adb42224ab070a7fcd031d1 SHA-1: 6e1fc05345a59c2da5eaf135157347acbc7e6627 SHA-256: 5401b55db8b0ba02be880ac79652997e1a7ef2f265873e45be9bc0434bfec946
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'traffking.ru', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to drawing, which is a common tactic to disguise 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
  • 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://traffking.ru/strik?utm_term=how+to+draw+a+owl+realistic PDF link annotation
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/1134596.pdfIn PDF document text
    • https://gukusabijimesop.weebly.com/uploads/1/3/4/7/134761354/luwuxusotunusoja.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/b31bc455.pdfIn PDF document text
    • https://vosuwuzede.weebly.com/uploads/1/3/4/7/134743003/7325839.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/2869c729-627a-4ce0-85fe-48d341364c0c/69797893631.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/75149573180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfe6488e-452b-441b-bfa1-45e9c6ecc8ec/ciclo_de_potencia_a_vapor.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/minn_kota_565_owners_manual_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87f21399-56c2-4b16-a97e-b9dff70341ba/57575283920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f26580d-7e1f-4cf7-919f-dc6acb533c30/download_nfs_most_wanted_pc_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df6bf18c-04f9-4400-900e-8a3f1fc8ef29/nemamuxuzixixiligazide.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/beastars_episode_5_kissanime.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/acisal_ivme_formulu.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/jerosutotevaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd87eb5c-76da-49d8-9689-aab6b7d7a6dc/xanamojavazewaruxazoguta.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_off0000c695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC695 4984 bytes
SHA-256: d6ea67c7768872d9e604b5a48bf097cd06ba0a3911df7b34f508581ccb07c9dd
font_01_sfnt_off0000d7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A3 10304 bytes
SHA-256: 0c4d8e8be26ba9f52445f0d57a3a931031aca4c37891c0f8d44129fa246e3ed8

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