Malicious PDF — malware analysis report

Static analysis result for SHA-256 9776dc52e55d6234…

MALICIOUS

PDF

78.0 KB Created: 2021-04-02 21:27:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: b214a1b0f11611c464216f5599f48713 SHA-1: bd49cac969133fd1f8c01dc0fec5ffbdcbfd513d SHA-256: 9776dc52e55d6234545aec30cbf8ed55d00dc48cbe8a404d6d6e8bda0eeb7595
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable hosting services, and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm designed to redirect users, and the primary URL suggests a lure related to updating a Garmin watch. While no scripts were explicitly extracted, the presence of external URIs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/strik?utm_term=how+to+update+garmin+s10+golf+watch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471484/normal_6045093dd6c42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450038/normal_5ff9c9dd9c566.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/WheTUnP/guess_the_movie_quiz_answers_level_22.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/heihgha/muguzakoleliwig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474457/normal_601fcf9cb3e18.pdfIn PDF document text
    • http://basijinogasa.22web.org/kepiwowafa.pdfIn PDF document text
    • https://cdn.sqhk.co/gixobujikelu/vgCijhS/zigavek.pdfIn PDF document text
    • https://cdn.sqhk.co/surikuzezun/D9ichij/napamit.pdfIn PDF document text
    • https://cdn.sqhk.co/gulidepiz/17ijJCc/96114753565.pdfIn PDF document text
    • https://cdn.sqhk.co/wadalibituge/Kojb9jc/metric_conversion_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/8hjxfrs/98219657043.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwatak/hdgf8jf/41570087035.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_6033e678bbe19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485173/normal_601e491d672a4.pdfIn PDF document text
    • http://gidubanijokov.22web.org/human_anatomy_and_physiology_with_pathophysiology_book.pdfIn PDF document text
    • https://cdn.sqhk.co/zimevegi/ibRCiiG/bosaduwenaripawevonarubom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://folijurojavagig.epizy.com/tomokuxipuju.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/why_is_hp_envy_not_printing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e63a7eb-50cb-467a-afcc-b1003ca7b5c5/bixipuxevumefikig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15cf1e9e-09a4-4f53-b49e-683d30bc00d0/what_are_the_triangle_congruence_theorems.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/damorakodi.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/yamaha_rx-v471_review.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/html_tags_definition_deutsch.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_off0000f2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CE 5816 bytes
SHA-256: e204537f24f7b62ba95bfcf31b4eb7d326fa32800bd7845a7e0c75c9ea413661
font_01_sfnt_off00010690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10690 10652 bytes
SHA-256: eee3ac75ced8db3911d26c2a308eb7920245d7646c69601726e9dd0de9d998b9

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