Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ebf330221ba2fe…

MALICIOUS

PDF

79.5 KB Created: 2021-03-08 01:41:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b44d64772ffa5782cc2aaaa0d322568 SHA-1: 7cd119f4bc9bd83ff9542e1c60cecb7cafcc8f64 SHA-256: f5ebf330221ba2fee1c3973c87f6c1e83c6b0afffce9547f7a9d4b0548d6560a
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 intent. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though partially corrupted, suggests a lure related to an educational answer key.

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://bologen.ru/wix?keyword=the+lesson+of+the+kaibab+lab+4-2+answer+key
    • https://static.s123-cdn-static.com/uploads/4471230/normal_5ffc5d69a9659.pdf
    • http://jorowijedo.mywebcommunity.org/97_s10_brake_light_wiring_diagram.pdf
    • https://cdn-cms.f-static.net/uploads/4369653/normal_600cdee1c176b.pdf
    • http://mudixefibewab.mywebcommunity.org/61456993743.pdf
    • http://6gusevshop.website/what_is_yamaha_clavinovaznqfu.pdf
    • https://nerilumasufut.weebly.com/uploads/1/3/1/4/131437044/xifasalutumin_kisuwomuveg_zegigunirokodis.pdf
    • http://zumbayuliya.online/67734856314mp0oa.pdf
    • http://farvestnn.ru/fetenusa788ez.pdf
    • http://dizurexemubegog.mygamesonline.org/97045998.pdf
    • https://cdn-cms.f-static.net/uploads/4388825/normal_600de7b40058a.pdf
    • http://starconflict-game.ru/34332725489f56nb.pdf
    • https://static.s123-cdn-static.com/uploads/4374980/normal_5fca143d57a1d.pdf
    • http://didazema.mypressonline.com/jovowevebumifiwuduvi.pdf
    • http://ppl-nutrshopfit.website/pioneer_ductless_mini_split_air_conditioner_installation_manualwqi5p.pdf
    • https://static.s123-cdn-static.com/uploads/4495257/normal_5ffd3cc670ead.pdf
    • http://bosnoslovnoejelaniekupit.xyz/what_are_the_deltas_of_a_call_option_and_a_put_option_with_the_following_characteristicshhhmp.pdf
    • http://kamini33.ru/radef1e8eu.pdf
    • https://wamazuwo.weebly.com/uploads/1/3/1/3/131380988/9314497.pdf
    • https://warexuzema.weebly.com/uploads/1/3/4/6/134601764/wekon-magoku-xowuvipasep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://rabatelekovufar.myartsonline.com/how_to_reset_low_toner_message_brother_mfc-7460dn.pdf
    • http://benamow.myartsonline.com/45048943217.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecdc.bin
02546cca96d4092b0ce45245e0d18c7de1629ea6ee852c3036a51cee6cc8b110		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECDC 5240 bytes
font_01_sfnt_off0000febe.bin
71db7e507d4b16db2319a7891495ca36377f382d45ca911b86913fe544875064		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEBE 10412 bytes
font_02_sfnt_off00012270.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12270 4324 bytes

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