Malicious PDF — malware analysis report

Static analysis result for SHA-256 a27c6f5730ca6f0d…

MALICIOUS

PDF

79.4 KB Created: 2021-03-15 07:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a53b823c2b1a3380ca194bfab52ef551 SHA-1: 942b6982d62f0cc63aad1e52075786f16599068e SHA-256: a27c6f5730ca6f0d7089e639c99e7a0d656919db7dbf85b3bf265ea0236a2474
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent example being 'https://zajinet.ru/wix?keyword=jpg+to+excel+zamzar', which appears to be a lure for users seeking file conversion services. The document body, though heavily garbled, suggests a context related to file conversion, reinforcing the phishing pretext. The presence of embedded URLs and the nature of the detection indicate a likely attempt to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://zajinet.ru/wix?keyword=jpg+to+excel+zamzar
    • https://lefizedut.weebly.com/uploads/1/3/2/6/132681647/8e7dab5f.pdf
    • https://static.s123-cdn-static.com/uploads/4469847/normal_5ff093d095ca9.pdf
    • https://cdn-cms.f-static.net/uploads/4461481/normal_602757602e907.pdf
    • https://kerawidirara.weebly.com/uploads/1/3/4/7/134746453/kobuxipiwalo-musukolurego.pdf
    • https://static.s123-cdn-static.com/uploads/4374013/normal_5fdd762c773e5.pdf
    • http://salopkisa.website/werufapeludepetisigewow5ue0h.pdf
    • https://jekaboda.weebly.com/uploads/1/3/5/3/135398795/ruxutas.pdf
    • http://kazotapojiwi.mywebcommunity.org/81186668217.pdf
    • http://fortuneo.biz/the_memory_string3pr5o.pdf
    • http://freshmind.net/pet_rock_inventortms9r.pdf
    • https://lumidenozure.weebly.com/uploads/1/3/5/3/135345408/kuzisar.pdf
    • https://risogaruwakev.weebly.com/uploads/1/3/4/6/134634919/nuxomobum_zisiporo_mopudusuxara_nuzevezu.pdf
    • http://xtrading.buzz/76443189772rxlgc.pdf
    • https://romagazep.weebly.com/uploads/1/3/4/7/134759296/nuruxonilowigej.pdf
    • https://kowezuvive.weebly.com/uploads/1/3/4/6/134603832/nuwigexuwatixa_lowasirazizaxa_jadiguwafu_fazilipurime.pdf
    • http://wikowezenitezo.medianewsonline.com/19731147335.pdf
    • http://kadaxejob.mypressonline.com/adding_decimals_horizontal_worksheet.pdf
    • https://cdn-cms.f-static.net/uploads/4491936/normal_602fc69ce1fd3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/3e534cfd-cbbc-4a94-b01c-31b44cdab882/is_girlboss_getting_a_season_2.pdf
    • https://uploads.strikinglycdn.com/files/b64a5d01-339b-4886-9d77-b97ac77e04d6/24052230302.pdf
    • https://uploads.strikinglycdn.com/files/17922a48-d8fa-4aba-aec1-151c92475383/fordham_gym_class_schedule.pdf
    • https://uploads.strikinglycdn.com/files/d89abd30-4aaa-4127-9b83-7b28471140d7/soduxo.pdf
    • https://uploads.strikinglycdn.com/files/2b28aea9-124e-4845-88c5-cbfe01793149/myles_munroe_books_prayer.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_off0000eca4.bin
d2c6ef5ab0fed0047c4b4fc8ab454b36b764bbcff2ec3305b75dbea83bfbdbfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECA4 4816 bytes
font_01_sfnt_off0000fd16.bin
0af6015f822f3773c8fd5ed2a43201d47be63461391cd500f632a4be60706916		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD16 11424 bytes
font_02_sfnt_off0001226a.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1226A 4324 bytes

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