Malicious PDF — malware analysis report

Static analysis result for SHA-256 9069e1e8bffe19c7…

MALICIOUS

PDF

107.2 KB Created: 2021-03-01 01:49:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 67dc1c1c02dbc3425e02d309b48ad6b6 SHA-1: 108118eef09dc79f13d4ea1daec187a0f0e34f4a SHA-256: 9069e1e8bffe19c783d4f4ef2bcc097f5d323b3ef6e5393cc5e221994b3d1931
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, appears to be a lure related to movie downloads, directing users to external sites. The presence of multiple external URIs and the link farm heuristic strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/wix?keyword=khatrimaza+bollywood+movies+2018 PDF link annotation
    • http://tamakar.xyz/free_piano_sheet_music_someone_you_lovedonpxz.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/Xwid0Hl/toca_life_world_town_guide.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/7507058742.pdfIn PDF document text
    • https://cdn.sqhk.co/gagunewatevo/0jgid1I/domain_to_ip_lookup_python.pdfIn PDF document text
    • https://volufijipezuji.weebly.com/uploads/1/3/4/7/134703795/jesamuxaxowujep.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/how_to_use_nespresso_vertuoplus_milk_frother.pdfIn PDF document text
    • http://tesugujinarijag.mywebcommunity.org/55974515006.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/weight_loss_chart_printable.pdfIn PDF document text
    • http://stavki.link/nature_beautiful_hd_wallpaper43ix2.pdfIn PDF document text
    • http://xelibirujegid.mywebcommunity.org/zopopadinelulakixuzezara.pdfIn PDF document text
    • http://cooldomen.space/the_bent_rod_is_supported_at_a_b_and_c_by_smooth_journal_bearings._compute_the_x_y_z_components6otuq.pdfIn PDF document text
    • http://deutschebank-meine.com/jopazumopomesujamu00r31.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://fegosuzix.epizy.com/puppet_answers_lyrics.pdfIn PDF document text
    • http://kakarares.epizy.com/affine_transformation_in_opencv.pdfIn PDF document text
    • http://rodukamofuf.epizy.com/afsar_full_movie_openload.pdfIn PDF document text
    • http://xirugole.epizy.com/85396980238.pdfIn PDF document text
    • http://muvekalufisu.atwebpages.com/how_to_prime_wagner_paint_sprayer.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13111 6000 bytes
SHA-256: 656f4b900b8ba7f60d4be922b47fb97514693ec209581ef00e6ad3d97842b617
font_01_sfnt_off00014578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14578 15340 bytes
SHA-256: e24f45c2b2ba8586d8e19d73accbe1f1e15e75e3fccdadfdd48bb62bbd55d329
font_02_sfnt_off0001755c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1755C 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
font_03_sfnt_off00018aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18AAF 5532 bytes
SHA-256: e19047ca1d1cfeb5895a34712924204e43e5d656a217cb3775f3e0ef44cbec2f

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