Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba29ede02fecf4b…

MALICIOUS

PDF

71.5 KB Created: 2021-03-21 07:52:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 6dd9541d80930d89a965a042ac05eeab SHA-1: 0d647c10b0d3330d94ce857551da27a54a4efbc7 SHA-256: 0ba29ede02fecf4b256134c9d7c473c1bca260adb38a75299aa2b321f3e3484c
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, with one prominent URL being https://jacksth.ru/award. This suggests an attempt to drive traffic to potentially malicious or phishing websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/award?keyword=knowing+god+intimately+joyce+meyer+free+pdf PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7cfdce1-f6dc-41bb-8562-77092f426433/literature_a_portable_anthology_4th_edition_gardner_et._al.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/5559141893.pdfIn PDF document text
    • https://f1e11ea9-a931-46ad-af30-391325c877dd.filesusr.com/ugd/423518_a160e0d0a9cd44ec83af20adc122fca5.pdf?index=trueIn PDF document text
    • https://c6111751-42b6-464f-a8b1-832d492ff999.filesusr.com/ugd/3d0627_aa080cd9dec14115aa997e376485b35b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lakadutof/video_editor_app_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/computer_ki_full_form_all.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/noterilibomudoja.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/43871863476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cce6ec10-f48e-4b6c-8f7b-e70ccd774c57/cast_of_sarah_plain_and_tall_winters_end.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/crossword_answer_for_stroke_of_luck.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/bexoxofumiradosabaxixi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb063bd1-cbc4-42df-a55c-888df15c88e2/quadratic_equation_grapher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12ad7485-eaf0-4052-a8e0-9468039336e0/word_2013_character_count.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff3bfe00-1814-4dd7-927a-5a2dc604ccd9/will_there_be_a_book_after_conference_of_the_birds.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/48342740956.pdfIn PDF document text
    • https://8c56b32b-3398-45d6-9c0b-b55146621f16.filesusr.com/ugd/6924eb_1abab83ffc5c4e898e74d9623c32685f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/7853898523.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/7651520718.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/boss_2_movie_all_mp4_song.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_off0000d41f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41F 5536 bytes
SHA-256: fc1490533e3b3a915ac2ae602fc3a89d1b851c8aab695886f01769e08baa9f9f
font_01_sfnt_off0000e708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE708 12156 bytes
SHA-256: f565d873f663ee5a22ed3d3b0a339e0c225e25b26f205d52a77b9371f29a347a

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