Malicious PDF — malware analysis report

Static analysis result for SHA-256 be703790756397dd…

MALICIOUS

PDF

109.4 KB Created: 2021-06-05 06:18:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1b13b6e968bbc328243d441aff65f54a SHA-1: a846127c4b0d95cb1c39162f600035d674aa80a5 SHA-256: be703790756397dddc8d09a185856f8cf205f0b97757808283b271705b2b7804
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'botokaw.ru', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit users by directing them to this external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://botokaw.ru/123?utm_term=dj+aisyah+bukan+kaleng+kaleng+remix PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450639/normal_600d96f11f581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456116/normal_606dd80fc19c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419194/normal_5ff14fd02bc05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492555/normal_60105bc6b9f59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451206/normal_60366e909ffc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527042/normal_600c8c27634b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382619/normal_605f94c1708a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406455/normal_5fc6cab9daf55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389127/normal_6015840311bb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393022/normal_600a258513192.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499635/normal_601f6889a652a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420586/normal_5feb63df0d3ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vafobotigef.pbworks.com/w/file/fetch/144637113/3_examples_of_concrete_and_abstract_nouns.pdfIn PDF document text
    • http://rixepal.pbworks.com/w/file/fetch/144505311/90777635543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aaa2402-a6df-4246-99b0-e5411c167e45/62548376240.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcc0e1b2-3256-4c9d-94cf-1e231c31d95d/rehabilitation_act_of_1973.pdfIn PDF document text
    • http://xuwedateredu.pbworks.com/f/realidades_2_capitulo_3b-4_answers_page_61.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b469542-21be-421f-b073-5e1599631765/gemolosebenewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0492360b-6b20-4960-92d0-734e905f5cbe/how_much_is_a_dixie_chopper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb20334d-86f2-4138-b14e-63479ed35387/algebra_de_baldor_online.pdfIn PDF document text
    • http://pagorevet.pbworks.com/w/file/fetch/144448020/mavugugulopoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f61dfc67-cb7b-4e44-b59f-75f34ad87ab2/novum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab942db8-680e-4b20-9db7-cca8053bc571/fender_super_champ_x2_size.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off0000eef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF8 49548 bytes
SHA-256: a5d8a8452955c73a10c3ade4611855c1c055c12dcede68120b666c8db3a4ac80
font_01_sfnt_off00016ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16EE3 5548 bytes
SHA-256: 936ae5a551f862296e16465b9d0e3cd84118b90531945169442aaf34739b51f8
font_02_sfnt_off000181af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x181AF 10624 bytes
SHA-256: fbbff688767dcc942453d0669f7515ceb8b7db36acc0dafd335cb1d52246c5b6

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