Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8ab80ab6773f083…

MALICIOUS

PDF

77.1 KB Created: 2021-03-19 20:47:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 725682a50981ec07bf42864bf91f645c SHA-1: d93e202219c51f2fadfbb074d3469d790cbb2615 SHA-256: a8ab80ab6773f0834da9814e26ec73bfa05784384471f8599daaa21b1315b203
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URLs suggest a phishing or malware distribution attempt, likely disguised as search results or downloadable content. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with a phishing lure designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wix?keyword=sneakers+the+complete+collectors%2527+guide+pdf
    • https://static.s123-cdn-static.com/uploads/4416791/normal_5ff65cc80ab2a.pdf
    • http://obuv-kozha.ru/39586782217gopsm.pdf
    • https://cdn-cms.f-static.net/uploads/4408475/normal_5fe77683487c0.pdf
    • http://islemleriniz.org/discount_fly_tying_suppliesdepqx.pdf
    • https://cdn-cms.f-static.net/uploads/4416659/normal_60336510b5054.pdf
    • https://difodofixipa.weebly.com/uploads/1/3/0/8/130814112/8092042c041e20.pdf
    • http://zarewubizeno.mywebcommunity.org/87271620110.pdf
    • http://vibolofisef.mywebcommunity.org/61675092114.pdf
    • http://uplrezina.site/android_studio_run_button_disabledflxb6.pdf
    • http://itclick.pro/xefozolivinifidit5nn.pdf
    • http://garanibukumom.scienceontheweb.net/tegugutaxunufanajijul.pdf
    • http://gagimubu.mywebcommunity.org/jane_austen_pride_and_prejudice_audiobook_free_download.pdf
    • https://warogowi.weebly.com/uploads/1/3/1/6/131606132/cb292d695.pdf
    • http://strahuemsya.info/85274026120a1t5d.pdf
    • https://static.s123-cdn-static.com/uploads/4367617/normal_5ff9754da36ae.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6721cf66-b20d-4904-aa02-4b67cb618da7/amelia_bedelia_by_peggy_parish.pdf
    • http://lipabarud.atwebpages.com/38476091687.pdf
    • https://uploads.strikinglycdn.com/files/9d072946-81a1-473c-bb7e-fd27de48dbe0/86134391620.pdf
    • http://texatutegelemov.rf.gd/nokia_android_smartphone_under_10000.pdf
    • http://kitukogoxav.epizy.com/ruduvexapiguzefagozutoli.pdf
    • https://uploads.strikinglycdn.com/files/afda4590-d4c1-4a3b-895b-ffb26b02a112/fobafafajegomeguvizafop.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_off0000ed9c.bin
1d223683e2416dedd21d66ee66912595249d58afe45f610664263607543a8451
pdf-font-stream PDF embedded font (sfnt) at offset 0xED9C 5768 bytes
font_01_sfnt_off00010129.bin
b91ae344d38b4a44549447e34d581d40acb31c829797bcdf70174c403b71e41f
pdf-font-stream PDF embedded font (sfnt) at offset 0x10129 11048 bytes