Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a7695a5181dd2cd…

MALICIOUS

PDF

74.9 KB Created: 2021-04-24 21:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2719abad246d94723da7470588a5af5 SHA-1: b24900b795bff0571db297332148133bbf36b76b SHA-256: 1a7695a5181dd2cd31f99df25ae3002fe159cee2cbbd08caf7efe57c08c4382f
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a 'Pentair fns plus 48 filter manual'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/strik?utm_term=pentair+fns+plus+48+filter+manual
    • https://cdn.sqhk.co/merabuvi/IibxEgg/39274732970.pdf
    • https://cdn-cms.f-static.net/uploads/4409255/normal_601f8d57b0f3d.pdf
    • http://gitibew.22web.org/52363428955.pdf
    • https://cdn.sqhk.co/rapovixovuti/v6jhjGG/computer_viruses_definition_biology.pdf
    • http://ravuwetob.iblogger.org/brahms_ein_deutsches_requiem.pdf
    • http://lefuvaguvupawax.iblogger.org/liz_ielts_writing_task_1_with_answers.pdf
    • https://cdn-cms.f-static.net/uploads/4484612/normal_605a034652ae0.pdf
    • https://static.s123-cdn-static.com/uploads/4476150/normal_60047ce62bfaf.pdf
    • https://cdn.sqhk.co/xufojidaju/giDvhdD/strategic_management_meaning_with_examples.pdf
    • https://cdn-cms.f-static.net/uploads/4458390/normal_60642444bc23d.pdf
    • https://cdn.sqhk.co/febapaji/gc9hajc/rt_russian_news_today.pdf
    • https://cdn-cms.f-static.net/uploads/4489740/normal_606bff2ad9043.pdf
    • http://molosemavomow.22web.org/61448326893.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nademopor/26972781430.pdf
    • http://gagelenobom.epizy.com/jurivaba.pdf
    • https://s3.amazonaws.com/tobito/xovekikemisadakojulorax.pdf
    • https://s3.amazonaws.com/woxorojero/zowitejuwunevuxavuron.pdf
    • https://s3.amazonaws.com/xakusineba/dressmaker_2_sewing_machine_set_up.pdf
    • http://xemixelumulimos.epizy.com/73968749255.pdf
    • http://gugapuni.rf.gd/84306513967.pdf
    • https://s3.amazonaws.com/rodiligarexo/kevotetamusegokeku.pdf
    • https://s3.amazonaws.com/gatazeromij/how_to_buy_a_house_in_canada_with_no_down_payment.pdf
    • https://s3.amazonaws.com/fovezewi/viwepulowozeropow.pdf
    • http://moliduduzabet.epizy.com/forezejazepapovaje.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_off0000e658.bin
f093804c2e4a8a28ca364701a616c1c9a460d19a85aca6fd75b498277a8162d8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE658 5328 bytes
font_01_sfnt_off0000f869.bin
c59da64422256e462d9cb1f2944585737c6457450f7f943c3313978ce8d79fb1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF869 10888 bytes