Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe60c057c232cfa…

MALICIOUS

PDF

71.6 KB Created: 2021-02-25 05:10:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 26565f629dd89c7820040576ef195ed6 SHA-1: fa2792defe23a3ad60005c4ec83ff6b38e0ad1f5 SHA-256: 8fe60c057c232cfa4f5a671dc6a177b79f6964e2cd4bcc31aa4ec8aaf85bcd1b
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external URIs and embedded URLs, many of which point to disposable hosting, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, appears to contain keywords related to educational materials, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=common%20core%20sheets%20equivalent%20fractions%20decimals%20and%20percents PDF link annotation
    • http://gekodejevotug.medianewsonline.com/free_mixed_parts_of_speech_worksheets_with_answer_key.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/xalovetesibififusig.pdfIn PDF document text
    • https://cdn.sqhk.co/podidiwi/FsN48id/56669397692.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/how_to_fix_a_broken_stove_knob_shaft.pdfIn PDF document text
    • https://cdn.sqhk.co/vetedaxuzele/Xijjfhe/port_lympne_zoo_postcode.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/how_to_determine_mean_from_boxplot.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/an_introduction_to_applied_econometrics_kerry_patterson.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/65848491557.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sutexuvidag.myartsonline.com/what_qualifications_do_i_need_to_be_a_vet_assistant.pdfIn PDF document text
    • http://kagilabitivibe.epizy.com/ansible_rpm_centos_7.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/taco_bell_nutrition_soft_taco_supreme.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_off0000da7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7A 5484 bytes
SHA-256: 21f9683e945b29e4e7ddbb94f8a3cf6727bd593ac52481a8a6509512a8f91126
font_01_sfnt_off0000ecff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFF 10656 bytes
SHA-256: 7b0a9a765be4212a23608890b77a715abcf74ce94158a650cb2a2be3385c62f9

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