Malicious PDF — malware analysis report

Static analysis result for SHA-256 92155b7ea27a5f31…

MALICIOUS

PDF

77.3 KB Created: 2021-04-01 22:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef1b548eca5e85aff4366dcc063acb87 SHA-1: 53c180b97cf3dac7ddfd05732fa5bf9dfd7770ea SHA-256: 92155b7ea27a5f31bc1fd6e61c96d4e0d23bd7733a957762e5c7a1586e8f31aa
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded URIs pointing to external resources, suggesting an attempt to redirect the user to a phishing or malware distribution site. The presence of these external links aligns with the typical behavior of spearphishing attachments designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/123?utm_term=kangaroo+care+guidelines+uk
    • https://cdn.sqhk.co/rosivapixove/vyifxh5/icps_guidelines_2018.pdf
    • https://cdn.sqhk.co/vevajewez/7Bhghif/stickman_destruction_4_apk.pdf
    • https://talowitutujuf.weebly.com/uploads/1/3/3/9/133999148/xibotadikowisa.pdf
    • http://tasigezagu.scienceontheweb.net/15828264320.pdf
    • http://kzrovk.xyz/luwexoxajatatha27c.pdf
    • https://sesuzefodapu.weebly.com/uploads/1/3/2/8/132815176/894615592f.pdf
    • http://twenty-promo2020.ru/samuel_beckett_plays_onlinefyl10.pdf
    • https://lipuxavevafip.weebly.com/uploads/1/3/1/3/131398459/0c5fe00ef.pdf
    • https://cdn.sqhk.co/begokaxawip/aibKV6f/mma_fighting_clash_uptodown.pdf
    • http://afracheat4.xyz/serta_motion_iseries_adjustable_basenltpz.pdf
    • http://save50it.pro/filo_pastry_sheets_recipesohfuo.pdf
    • http://instasale.company/kovopijafuzufarupekanucpcuf.pdf
    • http://kizunawinim.getenjoyment.net/83400492518.pdf
    • https://paguvobidelovug.weebly.com/uploads/1/3/2/8/132815355/ba8d04859cb0d5.pdf
    • https://faluwizux.weebly.com/uploads/1/3/4/3/134372305/3744637.pdf
    • https://cdn.sqhk.co/nomitusibop/bhfthis/pekedif.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tobito/77525045216.pdf
    • https://s3.amazonaws.com/lakadutof/gantt_chart_template_hourly.pdf
    • https://s3.amazonaws.com/mesixadelomomo/game_mmorpg_free_to_play_android.pdf
    • https://s3.amazonaws.com/vososasoxumete/zadipuzujo.pdf
    • http://gaxilitexu.onlinewebshop.net/68009882440.pdf
    • https://s3.amazonaws.com/jeworurowam/7541936303.pdf
    • http://kopurelotalad.onlinewebshop.net/reliability_availability_and_maintainability_analysis.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f22b.bin
e6258efcde8d1f0f6a7de3b9b01234d0b68b4b8b00b4dbd0acf6cb9518c589ac
pdf-font-stream PDF embedded font (sfnt) at offset 0xF22B 5140 bytes
font_01_sfnt_off000103b9.bin
257ed13a39621227539c294c3c34b7a64bf6d7a6c50ea6c0822e627b0fa6da7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x103B9 10580 bytes