Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4fdf588ade82df6…

MALICIOUS

PDF

78.8 KB Created: 2021-03-23 21:43:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 940dbcc4f06bcd768db30de7461be96a SHA-1: 16f3c7d47df543252843a329b256c070c863a2c8 SHA-256: e4fdf588ade82df670c24abdddd0f5701e07a2c1ebdcaa6ac9fed4d9ccd3b496
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://lozipotod.ru/123?utm_term=translate+reflect+rotate+worksheet PDF link annotation
    • http://chebsvet.ru/averta_black_free6uxlb.pdfIn PDF document text
    • http://housefashion.ru/issue_tracking_system_sharepoint_template2ylv2.pdfIn PDF document text
    • http://fotamuta.iblogger.org/zotisuxajimep.pdfIn PDF document text
    • http://fastdonwload.space/the_unending_game_freejl2zi.pdfIn PDF document text
    • http://leomannapov.com/earth_right_now_from_spacerr5th.pdfIn PDF document text
    • http://websporizlehd.com/pufizuvilogirikaao.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xezonijida/20421880089.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/71990229820.pdfIn PDF document text
    • http://feneluveje.epizy.com/larimamonupezal.pdfIn PDF document text
    • http://kejoluxukoso.rf.gd/vernier_caliper_in_marathi.pdfIn PDF document text
    • http://vizepojuduw.rf.gd/febuxaxemonufasikurina.pdfIn PDF document text
    • http://zumuwojik.rf.gd/matlab_grader_canvas.pdfIn PDF document text
    • http://fejusudoboriduf.rf.gd/posufosodogibozagaza.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/video_trimmer_for_windows_10_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/12521053228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a60f3eeb-aed9-49be-9c1c-9d21dfad22e5/kikibidosozatiju.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/8869880696.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/shooting_games_multiplayer_pc_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e436d66-ad0e-423a-abcd-09155872cf00/5948790620.pdfIn PDF document text
    • http://babudenipovux.rf.gd/87003032449.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/96924845666.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/2240217405.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADA 4816 bytes
SHA-256: 7eccdd978ba7dd8f04087a3c490bd13fc9480de18d5d3ce3e2d74dd22f61134b
font_01_sfnt_off0000fb34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB34 10760 bytes
SHA-256: 1661f95da6b22fe7a231371b783c128e47ec84e424b4dda5578f7c9958d588fc
font_02_sfnt_off00011f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F83 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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