Malicious PDF — malware analysis report

Static analysis result for SHA-256 faac54e9f3b1331d…

MALICIOUS

PDF

79.5 KB Created: 2021-04-04 08:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29547fa5b1258e5a7170d0246ab950fc SHA-1: dca8d5e2d9c898f1bf83ab2f782137dbff9748bd SHA-256: faac54e9f3b1331dede3196bb268ddfb1194bcd36266d09b7ad31c1f38a19f63
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading software. The presence of embedded URLs and the overall detection suggest this file is designed to trick users into visiting a malicious site, likely for malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/wix?keyword=terrarium+apk+no+ads
    • https://tupobufilu.weebly.com/uploads/1/3/5/3/135310482/zuvetosamixixomari.pdf
    • http://tajupodibo.iblogger.org/annotate_a_in_onenote.pdf
    • http://simkosa.website/83966231454yjhtw.pdf
    • https://kekulepolunan.weebly.com/uploads/1/3/4/8/134889268/4230365.pdf
    • http://pusapev.scienceontheweb.net/abbyy_transformer_2._0_serial_number.pdf
    • http://befigter.xyz/72955904918mhv5s.pdf
    • http://sedovarubabozop.iblogger.org/meleravi.pdf
    • https://pixizibonemitu.weebly.com/uploads/1/3/1/3/131382366/3121235.pdf
    • http://fudoviwil.mywebcommunity.org/77792052071.pdf
    • http://imm-shoes2.club/96928229018pee2.pdf
    • http://universe1.space/13225376029y1rm5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zudupaxub.myartsonline.com/what_is_the_implication_of_ethics_in_health_and_physical_education.pdf
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_9d8c64265b58447194ccaf58c50b0816.pdf?index=true
    • http://vetuvadoxawiton.epizy.com/carer_allowance_income_test_form.pdf
    • https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_493b075acc66404cafbcdc75a48db97a.pdf?index=true
    • http://bemuvarewu.onlinewebshop.net/baixar_livro_o_poder_da_cabala.pdf
    • http://nixetatop.epizy.com/assassin_s_creed_brotherhood_prima_guide.pdf
    • http://pinogizege.rf.gd/82524958663.pdf
    • http://dijuvunote.onlinewebshop.net/english_language_course_in_urdu_100_days.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_off0000f03e.bin
c7e630a471f6590e19eff3fed63884bcf4ddf57a57f9fe4927e7b4fe25c570a4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF03E 5084 bytes
font_01_sfnt_off0001016f.bin
94b7e9492b17ba20543d32048c6f40461de95c3e962cc6878c2fc9972ece13a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1016F 22356 bytes