Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff3f8901e5a7da2b…

MALICIOUS

PDF

63.8 KB Created: 2020-10-29 05:50:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7c24aa0b2a32a69ecd09fe2d6f5ed28d SHA-1: 1ce9d7f2d0f2ad35b14ad9b48546796ae05fa04e SHA-256: ff3f8901e5a7da2b0cf44c2340a5e1570d78ea95865af2bd4bc4d5d174e89e93
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be a search query related to connecting Bluetooth headphones, likely a lure. The ML classifier strongly indicates maliciousness, and the PDF structure suggests it's designed to drive traffic to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.ru/123?keyword=how+to+connect+aukey+bluetooth+headphones+to+android In PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/denerad_sebegodidiker_duwegoxivefow.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/9826270.pdfIn PDF document text
    • https://relulime.weebly.com/uploads/1/3/4/3/134384492/tegalol_zirivoka_lobuv_rapefi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/julaxel/70064516788.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/razor_electric_scooter_battery_e200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8924/1264/files/windows_android_emulator_root.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7258/4380/files/grow_old_along_with_me_the_best_is_yet_to_be_sundial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4076/7639/files/rankin_county_school_district_lunch_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/gwu_spring_final_exam_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/ser_biopsicosocial_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/paulo_coelho_brida_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/cadette_marketing_badge_requirements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0623/2229/files/dimetuxuwawavefigaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2638/5576/files/fishing_planet_louisiana_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/access_bank_aptitude_test_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6285/3283/files/tigipoxave.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/cg_police_vacancy_2018_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6499/0117/files/4598216149.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/finopip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/6353/0434/files/extraordinarias_mujeres_de_la_biblia_eunice_faith_priddy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5958/2373/files/69649593102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5654/3944/files/afd_wahlprogramm_bundestagswahl_2020.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8EE 5520 bytes
SHA-256: 8300d64325de084c81382867861f4568f8568623dfee0a642d284cd1264e301d
font_01_sfnt_off0000cbb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB6 10956 bytes
SHA-256: 7973ba4071abf085897a5bbadefaf4a56b86e815601a6e828e579642585f1195

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