Malicious PDF — malware analysis report

Static analysis result for SHA-256 310aa3cea95bd5b1…

MALICIOUS

PDF

75.8 KB Created: 2021-04-04 22:03:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 007df3121032f32eb1362d8c1d956816 SHA-1: 447861bbdb11e5fb040aa8bba20f1b828b5c5055 SHA-256: 310aa3cea95bd5b1384c2ced91e91e6f010bf4b52255632ad0e9c599d55c3519
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body contains text related to a Maytag washer issue, which is likely a lure to encourage users to click the embedded URL. This URL leads to a domain that is not yet classified, suggesting a potential phishing or malware distribution point.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dafemum.ru/strik?utm_term=maytag+bravos+x+washer+won%2527t+spin
    • http://tafiwon.mywebcommunity.org/vogak.pdf
    • http://duxinivodozular.mywebcommunity.org/variedades_de_cafe_en_el_peru.pdf
    • http://pifowovumuwe.medianewsonline.com/wawavizuperimosara.pdf
    • https://cdn.sqhk.co/pulovafafita/vcjaih4/vunegobamekeroku.pdf
    • https://bafuselowazela.weebly.com/uploads/1/3/5/3/135318440/044f7f.pdf
    • https://jujivonigipegi.weebly.com/uploads/1/3/1/4/131453429/zukodidesadalux_voniroz_risinew_nivediparufa.pdf
    • http://kojazunupetip.mygamesonline.org/the_most_luminous_stars_are.pdf
    • https://rojanudase.weebly.com/uploads/1/3/0/9/130969060/wajapukizowawapemef.pdf
    • https://kovapuneluwaze.weebly.com/uploads/1/3/2/3/132302913/razobilutomoti.pdf
    • https://nokatumevizo.weebly.com/uploads/1/3/2/7/132740479/pejififomem.pdf
    • https://cdn.sqhk.co/wenejusuzixe/apjfkzl/play_free_card_games_online_no.pdf
    • http://vezukugijisepo.scienceontheweb.net/job_apply_resume_format.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xovolefewawex.atwebpages.com/adhyatma_ramayanam_malayalam_free_download.pdf
    • http://dowuvoduwitovos.atwebpages.com/puviwulefugevutokusonin.pdf
    • https://s3.amazonaws.com/nowokil/cub_cadet_ltx_1045_engine_oil.pdf
    • https://s3.amazonaws.com/fadadedezeker/68019747334.pdf
    • https://s3.amazonaws.com/kitakilesa/novagojovuvigoven.pdf
    • https://s3.amazonaws.com/kokesatodixon/64448310179.pdf
    • https://s3.amazonaws.com/perurulexi/gevovitobelavudapipujel.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_off0000e79a.bin
64140f897a0e09bed1f35c88ea92587f53a0ef824bb066b5348e9d8ce53ddf18
pdf-font-stream PDF embedded font (sfnt) at offset 0xE79A 5552 bytes
font_01_sfnt_off0000fab2.bin
2a579c9898dc871e208f89748cf0aa533ba2ae0d378901959ee0008d6ad886fb
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB2 10940 bytes