Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8c483c1588b6bc9…

MALICIOUS

PDF

76.3 KB Created: 2021-05-17 23:52:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 82d471ff18f8d4091300d76009200204 SHA-1: b05f8984f913d4d6576382e2616fde50d85afb87 SHA-256: f8c483c1588b6bc9407e951261864a92993111108d936f72c47c39fdd3d6b211
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9999

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://lozipotod.ru/strik?utm_term=number+tracing+sheets+for+kindergarten PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445555/normal_6016c2c950535.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385427/normal_5fe5c592c3e06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389384/normal_600d5f8fdd37b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472775/normal_6026a28bc6718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466376/normal_606b0a65cb2c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501057/normal_602ab59877c09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369512/normal_5fe00ba01ce3b.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/zamemigojat/bluetooth_keyboard_case_android_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/what_works_on_wall_street.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/87292706996.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3107d385-4196-4b73-81e8-ed4ca9574e70/economics_n_gregory_mankiw_5th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2a367bc-f6e3-450c-a418-4f7a7b64ab7b/jikopumulurezabitawakami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28f0230f-4bf5-40e1-99a9-209c06ba9e01/42163624086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ef30884-f4a0-47d3-8309-217b6dc555d3/nonton_streaming_film_after_met_you_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/63213637985.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/acronis_true_image_2019_oem.pdfIn PDF document text
    • https://s3.amazonaws.com/gatazeromij/why_is_my_sewing_machine_needle_not_working.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA5 5576 bytes
SHA-256: def5b5f168aefb162a4906ad56c088641015021b85f7f11a624331229e24a291
font_01_sfnt_off0000fd6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD6F 10912 bytes
SHA-256: 6c2722f325502922e23da68ab693efd41a83ba5d3cc53511f39733b4bbc7324f

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