Malicious PDF — malware analysis report

Static analysis result for SHA-256 3600aa0abb272bcb…

MALICIOUS

PDF

77.9 KB Created: 2021-03-02 02:48:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 37ffca8b7292650e6ce32d3ac19cd57d SHA-1: bed921d8b7ad77c4df0f60513b36ccac2a823448 SHA-256: 3600aa0abb272bcb17060a566006fe2af61fee512ac711d906daef578096b50f
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, indicating a link farm designed to host malicious content or phishing pages. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution via these links. While no scripts were extracted, the PDF structure and URL patterns are indicative of a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://golowaki.ru/wix?keyword=hid+rp40+installation+manual PDF link annotation
    • https://jijajaxasivezix.weebly.com/uploads/1/3/4/5/134588510/vujix-fidiro.pdfIn PDF document text
    • http://rigekuxinitevov.iblogger.org/kepexiwitobajafudidonu.pdfIn PDF document text
    • http://rotixumuzu.22web.org/15140972555.pdfIn PDF document text
    • http://tiwelonepozafuw.iblogger.org/33697946791.pdfIn PDF document text
    • https://teligodinawam.weebly.com/uploads/1/3/4/4/134457670/1ca7627e164f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503987/normal_5fc5c90e2bfa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_601afa50eb217.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418993/normal_5fe0d10878928.pdfIn PDF document text
    • https://soregekewo.weebly.com/uploads/1/3/4/2/134266411/lizedesofama.pdfIn PDF document text
    • http://ruzoboxilotazex.22web.org/how_to_make_red_mixing_colors.pdfIn PDF document text
    • https://jejipabiximi.weebly.com/uploads/1/3/2/7/132741556/15892cca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gokegufokefewev.rf.gd/2018_toyota_camry_xse_v6_for_sale_used.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/toro_gas_blower_vacuum_mulcher.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/balenciaga_city_size_guide.pdfIn PDF document text
    • http://tupaguwojisese.rf.gd/joker_board_game_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/19188598535.pdfIn PDF document text
    • http://kewivawegimomu.epizy.com/happy_birthday_song_kannada_movie.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D5 4600 bytes
SHA-256: ff7ba938967a013bf48cc04ba6c5781a331ed0c6eafb0260ef08976cbc989272
font_01_sfnt_off0000e556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE556 5060 bytes
SHA-256: a0f2f7431ecf047a61ce9190f98accb8bf0de878cd89d9c9a5a11d27a9828d1e
font_02_sfnt_off0000f655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF655 10752 bytes
SHA-256: 9297d7acc690908b17f73a47a99a5abc099c1fb851b5637d3354408a009f5e1d
font_03_sfnt_off00011a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A68 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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