Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13dd522cca43c8b…

MALICIOUS

PDF

79.6 KB Created: 2021-03-16 19:22:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 685dc47f67d1098a4711834e4ef30c21 SHA-1: 711b2018932785174b3749afbaccef084b72ad69 SHA-256: f13dd522cca43c8b92ac7228a81f53c3b6027ef8af5c837c172a69664079779d
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL, 'https://botokaw.ru/wix?keyword=liga+cesar+chavez+santa+rosa+ca+2019', which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a specific event or search query, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/wix?keyword=liga+cesar+chavez+santa+rosa+ca+2019
    • https://gefobivuvevu.weebly.com/uploads/1/3/1/3/131380717/6240291.pdf
    • https://cdn.sqhk.co/pemoxeriko/bnieXge/36441514144.pdf
    • https://static.s123-cdn-static.com/uploads/4374536/normal_5ff27cd9dac19.pdf
    • https://static.s123-cdn-static.com/uploads/4412568/normal_5ff81311474ff.pdf
    • https://renugukid.weebly.com/uploads/1/3/0/9/130969315/a781682674c.pdf
    • https://static.s123-cdn-static.com/uploads/4500895/normal_6002ed8bf0dad.pdf
    • https://cdn.sqhk.co/tatidukigag/wiarMhi/verizon_visa_card_customer_service.pdf
    • https://vekatugid.weebly.com/uploads/1/3/4/5/134592715/bejufitotapofanatidu.pdf
    • https://cdn.sqhk.co/mutexeze/dJidgfF/jamuzezesejerodatof.pdf
    • https://cdn-cms.f-static.net/uploads/4494160/normal_604057b262385.pdf
    • https://cdn-cms.f-static.net/uploads/4463791/normal_6047b33a93955.pdf
    • https://cdn.sqhk.co/kujotukil/LhfEXjf/wugalasupobodojeg.pdf
    • https://bujozimadepaxed.weebly.com/uploads/1/3/4/6/134615651/691829.pdf
    • https://cdn.sqhk.co/wanolugago/fhhx32m/57987456377.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lowuwofuxali/aspire_breeze_2_owners_manual.pdf
    • https://s3.amazonaws.com/tizowodifi/avast_antivirus_free_registration_key.pdf
    • https://uploads.strikinglycdn.com/files/1a5ae656-5e9b-4123-8716-b9de87f52d56/explode_the_code_placement_test.pdf
    • https://s3.amazonaws.com/somamere/medieval_2_total_war_unit_models_folder.pdf
    • https://uploads.strikinglycdn.com/files/969c5ef3-77f4-40f6-8326-ee77ed0182f0/50108992598.pdf
    • https://uploads.strikinglycdn.com/files/1aab3c77-d203-4b89-b5f8-725b54321057/diniropujomaxifijade.pdf
    • https://uploads.strikinglycdn.com/files/1939da6d-6491-4005-83b6-0958c433feb6/el_principito_fragmento_rosa.pdf
    • https://uploads.strikinglycdn.com/files/d518c082-3e70-4128-a56b-fe7f2e833964/small_appliance_repair_shops_near_me.pdf
    • https://uploads.strikinglycdn.com/files/d499188e-1c65-4040-a38e-1d2f7c649d02/how_old_is_percy_jackson_in_book_1.pdf
    • https://s3.amazonaws.com/babetafaperaxov/ratujusuwabakokilunejen.pdf
    • https://uploads.strikinglycdn.com/files/083e5322-3684-4296-8eed-c54be2140af7/drz400_engine_rebuild_kit.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_off0000f634.bin
142a3680f0986ddbaffa0f5e18ae947038052f5a949dda0f90476c604dfd1143
pdf-font-stream PDF embedded font (sfnt) at offset 0xF634 5564 bytes
font_01_sfnt_off00010935.bin
320e0908e4e1a2ab12b7f5329981307d0e951d5d35e4aba6cebc02afe25a2aa3
pdf-font-stream PDF embedded font (sfnt) at offset 0x10935 11256 bytes