Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17494bb163bae5b…

MALICIOUS

PDF

74.2 KB Created: 2021-01-24 18:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 25f40a5d79c83708798b513fca03f7fc SHA-1: 2f8b09e95fcbec9556800439129c4189e3a49319 SHA-256: c17494bb163bae5bbc6e9ce8ece24940a646de8d8be8102fd3a74261bbc60cf3
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs and a heuristic for a visual download button suggests a phishing or social engineering attack. The primary URL, https://baarspo.ru/123, is likely part of the lure to trick the user into downloading a payload.

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://baarspo.ru/123?utm_term=google+drive+how+to+train+your+dragon+3+the+hidden+world+in+hindi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449178/normal_5fd34f17bd6d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379500/normal_600546d9ed0d1.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/hdB8hgc/counter_terrorist_agency_cheat_engine.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446930/normal_5ffbd8528677c.pdfIn PDF document text
    • https://cdn.sqhk.co/tofegejij/hajh1fS/seabeard_game_walkthrough.pdfIn PDF document text
    • https://cdn.sqhk.co/lorotukogof/AkS4geO/87691594662.pdfIn PDF document text
    • http://good-production11.site/61097064736i0i0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485296/normal_5fe529e5315db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459025/normal_5fe962fd5171e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385026/normal_600322faedc20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497650/normal_5fff6cd624f12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449774/normal_5ff0333f78224.pdfIn PDF document text
    • http://prognoz-football.club/fishing_diary_mod_apk_2018v4kn6.pdfIn PDF document text
    • https://cdn.sqhk.co/nivurerazusa/8jhM8ka/zisokeli.pdfIn PDF document text
    • https://cdn.sqhk.co/rilowikapaz/ig6Dgfh/74461631503.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/hegjihg/airport_madness_3d_free_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD828 5240 bytes
SHA-256: b0d1ac90f561adbe01a31aee96865d9219d74ce8b41e5600681f073ce710c3dd
font_01_sfnt_off0000ea11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA11 10128 bytes
SHA-256: 15539fb5c36eae7a2596e869fcc62e828822be5e8390da9ab1ad317c6e1bd334
font_02_sfnt_off00010ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCC 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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