Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7890df6f417017…

MALICIOUS

PDF

82.7 KB Created: 2021-04-03 07:34:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d02282b12dacc362b9edf2da005e4b01 SHA-1: 260ee4db6aeea6ce9135e075e190823b4c907ceb SHA-256: 1e7890df6f4170172871f73aeb7c7b8ca8ed72aa9b3d08359d7db4890a6e8a91
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. Although the document body is heavily obfuscated, the presence of the external URI suggests the primary goal is to redirect the user to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://xezojetit.ru/strik?utm_term=apc+ups+br1000g+replacement+battery
    • https://cdn-cms.f-static.net/uploads/4369143/normal_602b7a50b8d0b.pdf
    • https://cdn-cms.f-static.net/uploads/4374177/normal_601255431efd1.pdf
    • https://gopaxabog.weebly.com/uploads/1/3/5/3/135309926/widomitip.pdf
    • https://cdn-cms.f-static.net/uploads/4446152/normal_60411405c62b9.pdf
    • https://sofeparevik.weebly.com/uploads/1/3/4/5/134517226/gadane.pdf
    • https://cdn-cms.f-static.net/uploads/4376371/normal_6038e8532ca5e.pdf
    • https://cdn-cms.f-static.net/uploads/4420927/normal_6018e952307cc.pdf
    • https://zujomesesewega.weebly.com/uploads/1/3/4/9/134902804/ribuwob-xipomomow-zekosalit.pdf
    • https://nubeboganiroj.weebly.com/uploads/1/3/1/3/131384383/nujaranosomegu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dopatujijidami.epizy.com/jixetasujutifaxirul.pdf
    • https://uploads.strikinglycdn.com/files/ce138a35-8d5b-43c5-8b13-3e420a78415b/magufuxoselodewon.pdf
    • http://joziluwegusudu.epizy.com/88423787091.pdf
    • http://titodopitafa.rf.gd/half_day_casual_leave_application.pdf
    • http://rebikesumusosu.rf.gd/rajodapiwuxigebu.pdf
    • http://vufagozujidivu.epizy.com/guidecraft_arts_and_crafts_center_set.pdf
    • http://netidufek.rf.gd/rowetesilorolar.pdf
    • http://mitotubuxabax.epizy.com/vuxok.pdf
    • https://uploads.strikinglycdn.com/files/f5b8b93a-e19c-4bef-973c-03d43cf3ba48/take_five_oil_change_alexandria_la.pdf
    • http://doxanagudaseku.epizy.com/company_of_heroes_2_review.pdf
    • http://kogejikez.epizy.com/5073564551.pdf
    • http://foxadawimuwewar.epizy.com/what_is_the_full_form_of_gimp_in_computer.pdf
    • http://penefilagew.epizy.com/cyber_hunter_lite_android.pdf
    • http://jiwerefupuz.epizy.com/iris_astronomy_software.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_off0000f6eb.bin
36b2b3cfed4faa4b56b66dfeb05b8dd4de4f7dc3838f24b6f8d58577b51af130		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EB 5400 bytes
font_01_sfnt_off0001093b.bin
6106f5abbe0aceda16c5ada061664dbc5b6caac25c867da52a135492a8416587		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1093B 11124 bytes
font_02_sfnt_off00012f66.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F66 4324 bytes

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