Malicious PDF — malware analysis report

Static analysis result for SHA-256 b019d0bd7ec59d65…

MALICIOUS

PDF

102.8 KB Created: 2021-03-17 07:09:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79c9c66d15b265389f89f256f951b43a SHA-1: 7e39d2066699086ca5dc03696b2fbd32cdf9a6d7 SHA-256: b019d0bd7ec59d6521a42590a05d6af61a63689534f6e271ab6a1b27e1ef3aaa
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious URL suggests the document is designed to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://jacksth.ru/strik?utm_term=what+items+do+i+need+to+wash+my+cartilage+piercing
    • http://zoo-taxi.site/digomedokimososedosunofojwghmj.pdf
    • http://iranomics.com/361995703395wb8a.pdf
    • https://cdn-cms.f-static.net/uploads/4373519/normal_602ac220f2363.pdf
    • https://cdn-cms.f-static.net/uploads/4453117/normal_604e6063855cb.pdf
    • https://static.s123-cdn-static.com/uploads/4422890/normal_5fde8f33b6c51.pdf
    • http://dalkomis.website/40223281456n4nzx.pdf
    • https://cdn-cms.f-static.net/uploads/4366969/normal_60381c04214c7.pdf
    • https://cdn-cms.f-static.net/uploads/4475392/normal_6016b5f453d98.pdf
    • http://apparently-home.com/87961047157mowvw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rurovikejigibu/burket_oral_medicine_12th_edition.pdf
    • https://s3.amazonaws.com/retobifulipo/python_bitcoin_mining_tutorial.pdf
    • https://s3.amazonaws.com/gulapore/what_to_order_at_dunkin_donuts_on_weight_watchers.pdf
    • https://s3.amazonaws.com/desenaz/21983547653.pdf
    • https://s3.amazonaws.com/fadadedezeker/gabexotebimiwugiwovibuxi.pdf
    • https://s3.amazonaws.com/levovod/32999563516.pdf
    • https://s3.amazonaws.com/gekixadonuru/what_is_a_pro_forma_statement.pdf
    • https://s3.amazonaws.com/mikibetiv/what_are_some_themes_in_a_dolls_house.pdf
    • https://s3.amazonaws.com/xelimewat/19512002515.pdf
    • https://s3.amazonaws.com/numegubowalonan/problems_in_analytic_geometry_kletenik.pdf
    • https://s3.amazonaws.com/panokojol/72402199611.pdf
    • https://s3.amazonaws.com/livivuvuwugeb/wuwuzibanadabufaf.pdf
    • https://s3.amazonaws.com/moduluzuxikari/percy_jackson_the_lightning_thief_2_full_movie_online.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
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012dd5.bin
f03016ed639110b1c35be10087e3dad9e95f959f3b757f62c5b7b9d3e95c3ced		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD5 5696 bytes
font_01_sfnt_off000140ec.bin
58765afbf79dfac18aa2be5657ba4048cf3b195f9206c7e7e4c9fcdb971a68cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140EC 6340 bytes
font_02_sfnt_off00015080.bin
770cae3d37c84eea3e85abdad562b1f68355c2214fdcb21f458a507588bc04ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15080 11428 bytes
font_03_sfnt_off00017797.bin
0d7b5de48ff5001cbee3948371e67b6999b3c8dc9da2328298d75d3db101b009		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17797 16040 bytes

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