Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf9c0e8599b5228…

MALICIOUS

PDF

76.5 KB Created: 2021-03-09 00:01:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fd40abdd4f28c34a4a20ab9615dcc213 SHA-1: d31ebeaae5e67a7097e29c3cd6727bd335a1402d SHA-256: adf9c0e8599b522868e74f43012b07d7488ace90d7df14d96033b92c5c13a881
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to disposable domains and known malicious redirectors, indicating a phishing or malware distribution attempt disguised as a free application download. The ML classifier and ClamAV detection strongly suggest malicious intent, likely involving the exploitation of PDF vulnerabilities to execute a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/123?utm_term=video+cutter+application+free In PDF document text
    • https://cdn.sqhk.co/dibirolinu/jhAijhe/lotadujiletete.pdfIn PDF document text
    • http://pivolirarorip.mypressonline.com/6453615672.pdfIn PDF document text
    • http://tezibif.mygamesonline.org/how_does_hr_improve_business_performance.pdfIn PDF document text
    • https://cdn.sqhk.co/muzolorakow/sElLCgj/snap_latch_puzzle_box.pdfIn PDF document text
    • https://cdn.sqhk.co/pujazojiwixi/ghhemgh/xuxavuvavoxik.pdfIn PDF document text
    • http://powerpoint4you.ru/game_download_for_pc_windows_84tye2.pdfIn PDF document text
    • http://gowanenutik.mypressonline.com/40938818194.pdfIn PDF document text
    • http://the-glow.ru/helix_waltz_clothing_guide8mdg3.pdfIn PDF document text
    • http://pelistens.xyz/brinks_resettable_combination_lock_manuallyqgh.pdfIn PDF document text
    • http://meetsol.xyz/what_are_the_factors_that_affect_motivation7w2yl.pdfIn PDF document text
    • http://pedagodogiko.getenjoyment.net/canon_mp160_printer_ink.pdfIn PDF document text
    • http://tamodemuror.getenjoyment.net/mutufejalugoripepijol.pdfIn PDF document text
    • https://cdn.sqhk.co/jipogidara/jhlIghb/memoratasitoletibida.pdfIn PDF document text
    • http://mx50off.pro/kunametofoluxupl150j.pdfIn PDF document text
    • http://lebepufu.mypressonline.com/56667229798.pdfIn PDF document text
    • http://rakapugijumub.sportsontheweb.net/what_programming_language_does_arduino_ide_use.pdfIn PDF document text
    • http://degimogug.mypressonline.com/41283980571.pdfIn PDF document text
    • http://bossyonlinex.com/fluke_1507_price_ukdtnpv.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/pavujiniz/virakujagixa.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/96398809445.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/23428404595.pdfIn PDF document text
    • https://s3.amazonaws.com/kubedukowug/kenmore_washer_water_pump_repair.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/84567587760.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 8

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_off0000ef9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9E 4936 bytes
SHA-256: 04c7e26b8dd2029552463d86cd008c598e38ce649e79b3f1ec4cc48e10c5965e
font_01_sfnt_off0001007d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007D 10536 bytes
SHA-256: 69a9c7bc281fac14a15c0d630addf6ad4bc32d6ce8fc5945cff4ffef6d1655c5

Open this report in the interactive analyzer, or submit your own file for analysis.