Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce08fa078fce7a8a…

MALICIOUS

PDF

77.6 KB Created: 2021-05-23 23:51:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: d201e71c143b9fa9deb91617961b4cb4 SHA-1: 24d941d170ced320b24cfd04737924b5a869262b SHA-256: ce08fa078fce7a8ade255915d126591d9ae9022dc4c9c356dea8dbc8b4b4f02c
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which point to PDF files, suggesting a link farm or redirection mechanism. The primary URL, https://baarspo.ru/strik, appears to be a lure related to movie downloads, likely intended to trick users into clicking through to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://baarspo.ru/strik?utm_term=shawshank+redemption+tamil+dubbed+movie+download PDF link annotation
    • https://forugizatufuru.weebly.com/uploads/1/3/1/4/131410167/1477475.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452377/normal_603cfac55913c.pdfIn PDF document text
    • https://bofakodejo.weebly.com/uploads/1/3/4/2/134265658/8681861.pdfIn PDF document text
    • https://fopudodesesiwen.weebly.com/uploads/1/3/4/3/134344932/donami.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406456/normal_600c7469a549a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368224/normal_5fcda9d5c83a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386613/normal_5ff811efbdc0d.pdfIn PDF document text
    • https://nukijevexumi.weebly.com/uploads/1/3/4/7/134714394/susituzanadubat_rolalenur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/03928346-06b0-4f8b-8581-2c886cde53e1/volumabipapapakoburitasol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea9b040c-cd15-48ce-9f53-0918e5971cbe/bionaire_humidifier_replacement_water_tank.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63bd43db-f6e2-43b4-aaec-ca63f73d8b1a/zoo_libro_james_patterson_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11a58a28-5dbf-4f74-92d2-699c48a69c4e/how_would_you_describe_tequila_sunrise_on_guitar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beb41980-fea6-4121-a129-b6f5ed0434fd/84569829713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/646ed815-6e09-4230-a70d-d74f0c322af6/dd_5th_edition_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/762647b7-508c-46f2-89fc-6fa7057074d7/68097736526.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c32b2a9-36ef-415e-804e-44c8cef9275f/how_to_get_canon_scanner_to_work_on_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b524c3c-2e9b-4a78-831f-e8437f49f8eb/burerebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/758da127-89fe-4441-bc93-9721fe6f66ac/how_to_read_a_birth_star_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee632c90-509c-4b1e-83b0-48b9e0f7ec19/cat_forklift_for_sale_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f0ea6a4-6135-4828-a1cc-773426b04524/fexawowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afad6e51-cbe9-4477-989a-aa0fa5970dda/17340101002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7657bf12-7603-49e0-82c1-24910a3118e3/kenmore_70_series_dryer_heating_element_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e677de57-93fd-4e3e-8d74-784e8873d112/how_to_change_a_vicks_thermometer_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d3d5506-8810-4cad-adb9-a410076bb92d/how_to_install_windows_10_from_dvd_step_by_step.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92ffeab5-6626-41cb-a97e-de012670a1dc/actiontec_wcb3000n_setup.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_off0000f1ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EE 5660 bytes
SHA-256: 735529d3aa9787f8a709e7327408e48942a04d53cc5f9725ca5b4818466db3e3
font_01_sfnt_off00010513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10513 10404 bytes
SHA-256: fce903e8d1eb23be77d3827da7a2042dbeeeee6e0ee82abab7c82db751fe12fa