Malicious PDF — malware analysis report

Static analysis result for SHA-256 799dbbd5f117bca1…

MALICIOUS

PDF

76.5 KB Created: 2021-02-27 20:11:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9f81c5f35a8c317d753455ba4977adbb SHA-1: fa26a71fe9776f24aab9f53d6fc53e2ba1f98cae SHA-256: 799dbbd5f117bca153594fcb2392104cd11218f78c0714f18d94c3e9d1dc6dbd
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically flagged as a potential phishing lure related to song lyrics. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the presence of embedded URIs and the overall heuristic analysis points to a phishing or malware distribution attack.

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://baarspo.ru/strik?utm_term=what+if+god+was+one+of+us+lyrics+alanis+morissette PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4371014/normal_5ff9508248869.pdfIn PDF document text
    • http://sizegivip.22web.org/jupopatazopewigomejoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491439/normal_601b596826322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414360/normal_6023f31076099.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445871/normal_600868601ffa6.pdfIn PDF document text
    • https://cdn.sqhk.co/zinazejoras/4Xeieic/rotation_control_app_for_ipad.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxarulenogu/dFggbgh/kong_godzilla_news.pdfIn PDF document text
    • http://lujoxowuri.iblogger.org/e_aadhar_by_name.pdfIn PDF document text
    • https://cdn.sqhk.co/gowalitusiwa/hlbknHA/kendall_and_kylie_jean_shorts.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/luxilakokafuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416675/normal_60160b11aa65a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484114/normal_5fca5c25f106e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zudupaxub.myartsonline.com/zekorapubigisirumatimonul.pdfIn PDF document text
    • http://zisilorelane.rf.gd/flintlastic_sa_cap_sheet.pdfIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/medicare_claims_processing_manual_chapter_12_section_20.3.pdfIn PDF document text
    • http://lagiwafumize.rf.gd/30965227479.pdfIn PDF document text
    • http://gozudivigel.epizy.com/79253296139.pdfIn PDF document text
    • http://rivubutapadagar.epizy.com/56295813559.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d77a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77A 5644 bytes
SHA-256: 3c6f52a4993588dbd94caacb1d1d331c931be0ae229e8e6de8bee5b99484054d
font_01_sfnt_off0000eaa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA2 10640 bytes
SHA-256: fc25e8e89f989d682a49c58d85793fe3fe710a4069a84a4ba9543681e74e51f8
font_02_sfnt_off00010f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F08 16160 bytes
SHA-256: b91ebbfc40a94f10b2fcfc4d08542e4cd4fc38dcff43bcfefe5d572695fcce17

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