Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d76460b136f51a…

MALICIOUS

PDF

72.4 KB Created: 2021-03-14 18:11:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 21006e3ef6b30de53c3ff39637a11b9d SHA-1: 1b6ca12d055c5e99fa77c480a6b86e293cf24113 SHA-256: 14d76460b136f51a07122fdaa44435c9b5c3c373f3c0e25829e579ddd37b048d
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI that points to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, contains text related to video and programmatic content, suggesting a lure. The presence of external URIs indicates an attempt to redirect the user to a potentially harmful site, likely for phishing or malware delivery.

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://jumiwimov.ru/123?utm_term=video+from+facebook+android+programmatically PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370266/normal_5ffe9802a308e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417205/normal_6033c27f486dd.pdfIn PDF document text
    • http://wojurimaxab.mywebcommunity.org/why_dont_microwaves_have_a_silent_mode.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503309/normal_603620a846b98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_6041e2761350e.pdfIn PDF document text
    • http://nibajafij.medianewsonline.com/machine_learning_algorithms_basics.pdfIn PDF document text
    • http://gazozaxuk.getenjoyment.net/artritis_reumatoide_diagnostico.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473916/normal_5ff7a7ee8dcb0.pdfIn PDF document text
    • http://fevofawemuwa.medianewsonline.com/65923599801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406229/normal_5fe694836b241.pdfIn PDF document text
    • http://lupazul.mywebcommunity.org/jipotagegisatunowixin.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/gusule/unbearable_lightness_of_being_movie_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/crt_tv_smps_repair_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/wirago.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/off_road_bus_games.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/us_army_special_forces_insignia_of_the_vietnam_war.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/antares_movie_isaimini.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_off0000ddc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC9 5568 bytes
SHA-256: 5db709da3b9a6831fae73dc015170ed5fe89cd5d678bd759adb72e527c3345e1
font_01_sfnt_off0000f0b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B1 10444 bytes
SHA-256: b23e5538dcaea8ea994d04e9b5ad6a864ae117d7112122bf8797ded212098cc1

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