Malicious PDF — malware analysis report

Static analysis result for SHA-256 38dc2759e1616c48…

MALICIOUS

PDF

76.0 KB Created: 2021-03-08 01:45:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 22fed941842d9ccca381af9f657fa39c SHA-1: e0c3328d94c328fc26ad8867c6c723e618dc65dd SHA-256: 38dc2759e1616c487034cb16b3fa64d9791b543020d3e9c91eae15299c330f40
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous external URIs and embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The PDF structure and embedded content indicate it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/wix?keyword=warriors+spottedleaf%2527s+honest+answer PDF link annotation
    • http://tersq.fun/65362570039yzaol.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/heir_of_fire_summary_spoilerszhut7.pdfIn PDF document text
    • http://lbaranaydin.com/490552995859cy3h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472494/normal_6008cf7053fa2.pdfIn PDF document text
    • http://trynutra.shop/pilot_g2_10_pens_office_depot5gn76.pdfIn PDF document text
    • http://future-techno.ru/jarutigadiwopuserajerurizbym7r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484835/normal_601098ac1ad33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454042/normal_6023d002bfdbc.pdfIn PDF document text
    • https://tutitobogin.weebly.com/uploads/1/3/4/4/134485970/xotawuxe.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/dcBiOY8/jokawesedifimetupesefa.pdfIn PDF document text
    • http://grantmedica.ru/16323878821rf9az.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/jfEiexw/keforowofubigenujede.pdfIn PDF document text
    • https://lofusomibebez.weebly.com/uploads/1/3/2/7/132740423/wijodu.pdfIn PDF document text
    • http://lakshmi-store.ru/dichotomous_key_fish_lab_answers7ncl5.pdfIn PDF document text
    • http://alania365.ru/zevajabwh3g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384308/normal_6007ec6362af2.pdfIn PDF document text
    • http://istra-backwater.ru/552010804843wtod.pdfIn PDF document text
    • http://flipping-car.online/80858708731taa5m.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://01c19f78-c7d0-441a-b56a-8672493f87de.filesusr.com/ugd/9d66c7_7a69cb6e5faa4bc8beb234b3206a2d97.pdf?index=trueIn PDF document text
    • https://da550aaf-34ae-4f9b-ad82-7836b82beebe.filesusr.com/ugd/a203e6_d2a96bf3129c4fdf8cbb4e51ce579160.pdf?index=trueIn PDF document text
    • https://49432a94-54bc-4d13-9d12-ea41d731e1b8.filesusr.com/ugd/a7c689_f230c1e4e0a1469492cf3f704ca86119.pdf?index=trueIn 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_off0000ed44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED44 5268 bytes
SHA-256: 183e7d7a757ae629f610a6c62b72661e418b6238cdecc96e44cb6f9c944e6290
font_01_sfnt_off0000ff4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4A 10300 bytes
SHA-256: 42cd07292bf061f29a9f9209f610e91b0828c1348a7647eed04ff7b7089e155a

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