Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a2b5243b342e77…

MALICIOUS

PDF

64.5 KB Created: 2021-01-10 17:42:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 497b9d9a139e011a7ed806f866bf4a34 SHA-1: e980ef7b479bde370173bfac9cc22f63d415329a SHA-256: 47a2b5243b342e77a7028ce100f002a8ef9ff5f5aafee5c6dc0a3658d31de556
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain. ML classifiers and ClamAV detections strongly indicate malicious intent, classifying it as a phishing or trojan PDF. The presence of an external URI suggests an attempt to redirect the user to a malicious site for further compromise.

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://traffine.ru/123?utm_term=stony+brook+loews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392667/normal_5f94339d24f58.pdfIn PDF document text
    • https://site-1172875.mozfiles.com/files/1172875/warframe_panzer_vulpaphyla_mutagen.pdfIn PDF document text
    • https://site-1177442.mozfiles.com/files/1177442/24227261802.pdfIn PDF document text
    • https://site-1180637.mozfiles.com/files/1180637/66573814097.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xixonu/vitaruxufuvinumavu.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/mayabazar_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/bopalik.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/86186648216.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/42920643793.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/3d_video_vr_box_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/74166193230.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/zapukosimukenebo.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/imperialism_political_cartoon_activity.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/wrathful_smite_5e.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/cg_vyapam_set_exam_2018_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/nojoduvofesemowosamizob.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_off0000c2be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2BE 4968 bytes
SHA-256: 52f0ade3224dd0d117981b3cf3bcc195058a717f93ccc207d9f5c304962416da
font_01_sfnt_off0000d3d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D2 9828 bytes
SHA-256: 430add979792886b7653627e62b5b19fc15791a436740b990fb0683876c9fed7

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