Malicious PDF — malware analysis report

Static analysis result for SHA-256 d132bd5a15002fb6…

MALICIOUS

PDF

76.5 KB Created: 2021-04-04 01:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d1eabf610035a6d95b31e87253420fe SHA-1: 7c70c1d3abbd8d0a91899084aec85a6e49ea452a SHA-256: d132bd5a15002fb616ff1447c72b14133194dd18ee857d2ce90dc68839440642
96 Risk Score

Malware Insights

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

The file is a PDF that contains embedded URLs, one of which is used in a lure related to 'the grinch coloring pages'. The ML classifier and ClamAV detection strongly indicate maliciousness, likely a phishing or trojan delivery mechanism. No scripts were extracted, but the presence of external URIs suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/wix?keyword=the+grinch+coloring+pages+pdf
    • http://gojifenap.22web.org/20702486280.pdf
    • http://tefigizuvixan.22web.org/rujetetimemiwo.pdf
    • https://cdn-cms.f-static.net/uploads/4408481/normal_604fbb259f037.pdf
    • https://cdn-cms.f-static.net/uploads/4407316/normal_601a6b5407061.pdf
    • http://onesmall.space/solitaire_247_3_cardja74u.pdf
    • http://helpcopyright-service.com/the_archer_warrior_apkam0aw.pdf
    • https://static.s123-cdn-static.com/uploads/4407576/normal_5fcd821ac60b7.pdf
    • http://cardioactiveufficiale.site/kijelalotatuvusageta4nfx.pdf
    • http://vilopeg.xyz/is_english_literature_a_college_majorudufy.pdf
    • https://cdn-cms.f-static.net/uploads/4388819/normal_6040adc7e1cec.pdf
    • https://cdn-cms.f-static.net/uploads/4460055/normal_60609a6511f31.pdf
    • https://cdn-cms.f-static.net/uploads/4490949/normal_602f51f6a6f71.pdf
    • https://static.s123-cdn-static.com/uploads/4485005/normal_5feb7e7410297.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tajimipojimo/rajowe.pdf
    • https://s3.amazonaws.com/kezemiradigu/basalte_deseo_manual.pdf
    • http://lujubozugib.epizy.com/davimupitafu.pdf
    • https://s3.amazonaws.com/vawoginele/wuwagafowamimoxofovoboxap.pdf
    • http://jajabidabewaw.rf.gd/taser_axon_body_camera_manual.pdf
    • https://s3.amazonaws.com/zoxewudunigus/how_much_does_a_network_technician_make.pdf
    • http://gujodilulu.rf.gd/informal_letter_writing_questions_for_class_5.pdf
    • https://s3.amazonaws.com/jevopemosod/densidad_el_agua_en_g_ml.pdf
    • http://vosowetawevu.epizy.com/the_lord_of_the_rings_the_fellowship_of_the_ring_gameplay.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e982.bin
e33c5109955219f02e65a22a49ef9d72f3215888a6ece2ab2c577da744d03f3b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE982 5368 bytes
font_01_sfnt_off0000fbbe.bin
d8ae6a08394ce93c61939e2bf8e8b22d6780d897b41b227a61898edea6e735a0
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBE 11572 bytes