Malicious PDF — malware analysis report

Static analysis result for SHA-256 18746e17c2198b60…

MALICIOUS

PDF

83.7 KB Created: 2021-02-25 22:40:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 9d11e9b79363d4879d2cd878d4541603 SHA-1: 779e0dfa2d4819abb5bcc154fbcfa1ec73e09b4b SHA-256: 18746e17c2198b6026bb00249f9964106077d39a008194eda8aec392e4221824
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, suggesting a phishing or malicious redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure to a malicious website, likely for credential harvesting or further payload 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 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://seumenha.ru/wix?keyword=ad+posting+jobs+in+pakistan PDF link annotation
    • https://cdn.sqhk.co/pibepufas/vRIiijf/p_bandai_gundam_japan.pdfIn PDF document text
    • http://zoo-taxi.site/bengali_full_movie_hd_khiladi2n7xk.pdfIn PDF document text
    • http://naturfresh.space/1655728136peua7.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/heggiwP/basketball_shot_live_wallpaper_download.pdfIn PDF document text
    • http://losmopaka.site/guitar_fingerpicking_lessons_youtubepydwg.pdfIn PDF document text
    • https://cdn.sqhk.co/mivadunoxo/gfdifgi/bluestone_and_hockley_reviews.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/bogonavigimubeg.pdfIn PDF document text
    • https://cdn.sqhk.co/koporikog/bdTifgd/answer_to_the_picture.pdfIn PDF document text
    • https://cdn.sqhk.co/rularijulen/jhaHghA/daily_mirror_rocketman.pdfIn PDF document text
    • http://sis-paypal.com/igi_2_free_download_full_version_ocean_of_gamesglmye.pdfIn PDF document text
    • http://mitimewigupito.mypressonline.com/how_to_become_a_dj_for_beginners_with_laptop.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/31572848247.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/riwudowa.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/xugeluno.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/definition_of_visual_impairment.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/35491742146.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/structured_cabling_installation_guide.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/how_to_make_ribbon_bows_for_gifts_step_by_step_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/jivivabuzavupowebom.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_off00010a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A2D 5268 bytes
SHA-256: f762659efa55484de1346a3e1d867be51ac739f4dd8abe0271cf909b333ee0b7
font_01_sfnt_off00011c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C2E 10980 bytes
SHA-256: 5d298e46ca9f7e8966ba92025835ee71ffd135b6b543233c01431a0bb76a21c5

Open this report in the interactive analyzer, or submit your own file for analysis.