Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d5c382d5f99c020…

MALICIOUS

PDF

77.8 KB Created: 2021-05-12 03:53:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7615abd8eaabe42aa9cbe96c1c00c44b SHA-1: 2a2f76fa9ed17958a3e66939d853a449fab0f905 SHA-256: 5d5c382d5f99c0200cc594f50c8ad36936db9820ee978c9928ed6d2566238943
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 machine learning classifier and ClamAV, indicating malicious content. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to a chainsaw model, suggesting a phishing attempt to drive traffic to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/strik?utm_term=how+much+is+a+stihl+ms461
    • http://lixodamevurobar.mygamesonline.org/after_the_love_has_gone_lead_sheet.pdf
    • http://wuwudikosegukem.mypressonline.com/16_mhz_crystal_oscillator.pdf
    • https://cdn.sqhk.co/xomatujod/iihdigD/wolf_online_mod_2._1._1_download.pdf
    • https://cdn.sqhk.co/numavagoko/gxgchac/modern_warfare_3_ps4_controller.pdf
    • http://fadewujetenuve.mywebcommunity.org/68207852159.pdf
    • https://cdn.sqhk.co/zidexamuwela/RzyKieY/powuvoliwuzeputifujave.pdf
    • https://cdn.sqhk.co/xolovagi/c7iiOkp/national_park_jigsaw_puzzle_100th_anniversary.pdf
    • http://fibipowokogo.sportsontheweb.net/baixar_catalogo_aje.pdf
    • https://cdn.sqhk.co/tumowara/cVh7gch/peliwujajidalofuwu.pdf
    • http://im-marceting.site/nowavikelixikevejdp6s7.pdf
    • http://bumumapa.mypressonline.com/bukhari_shareef_hadees_in_roman_english.pdf
    • http://vopugixeroramox.medianewsonline.com/91643984355.pdf
    • http://missunik.space/poptart_cat_flying_through_spacer8yyn.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pusixa/6751163215.pdf
    • https://uploads.strikinglycdn.com/files/525d40cb-ae29-445e-809e-da3a69283e9c/65773082915.pdf
    • https://s3.amazonaws.com/jifesu/adobe_indesign_cs5_tutorial_free.pdf
    • https://uploads.strikinglycdn.com/files/ce5f3846-85b0-44fd-8f68-2eba33b69d6b/zitusad.pdf
    • http://larovitivejel.atwebpages.com/15786364478.pdf
    • https://uploads.strikinglycdn.com/files/198d5ff0-2670-4adb-8986-620dc8696ac9/sexidorabosisobeterik.pdf
    • https://uploads.strikinglycdn.com/files/bad8ab1e-00b8-4082-aba2-93e390ce0a65/neopost_postage_meter.pdf
    • https://s3.amazonaws.com/nademopor/xuzelobotubosusorep.pdf
    • https://uploads.strikinglycdn.com/files/fb3206d5-5ca6-4dd6-846a-44a692c5defd/can_you_make_house_music_on_garageband.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_off0000f20a.bin
b215cb8767ea099c084a9908e23d91fb310da66f60fab10ff4289afb22f048b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF20A 5292 bytes
font_01_sfnt_off00010402.bin
a69cfd45d97bd6ef446ec5da79fff9a177f9c8854259a44262a23b8d6d7ebaa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10402 11096 bytes

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