Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d1f2d2dbd2702c2…

MALICIOUS

PDF

77.9 KB Created: 2021-03-03 08:44:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a9a4a4decafef659d58f931ab29128df SHA-1: bd38890a0b09bc042d94d8417955d686b87757a4 SHA-256: 6d1f2d2dbd2702c29261bb5e8a5dba08b7f46a53b4c985a9b0529fb2c69bbb8c
136 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI and an image lure referencing 'The color of magic summary', which redirects to a suspicious URL. ML and ClamAV heuristics strongly indicate maliciousness, classifying it as a phishing trojan. The presence of embedded URLs and the nature of the lure suggest it is used to deliver a malicious payload or conduct phishing.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://golowaki.ru/123?utm_term=the+color+of+magic+summary PDF link annotation
    • http://tublitalia.space/schindler_s_list_theme_sheet_music_freepw4y6.pdfIn PDF document text
    • http://esmoney.site/jibixezotolojizevatexupqyhsv.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/dif3Jji/gudawebefixomavape.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/bXZZAjf/wekodevumo.pdfIn PDF document text
    • http://keto-menu.online/tipopunudufunekugumovulunkiq4.pdfIn PDF document text
    • https://cdn.sqhk.co/koxuvusu/6geggih/math_color_by_number_multiplication_printables.pdfIn PDF document text
    • http://fredo.run/xerojexabigirejuboliue6qt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fajixe/purani_picture_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/numorimokotometezabume.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/34445388334.pdfIn PDF document text
    • http://rizusuzapil.rf.gd/piccolo_trumpet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/45166798294.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/7597110220.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F3 5040 bytes
SHA-256: c53ab0fb21bd0186245094e2caf7779db89d9c94d5c0d663a78f53178939a302
font_01_sfnt_off0000f91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91C 10408 bytes
SHA-256: bea210ec5cd10d30f6a19d97aceaeb8e112270fd065708552e3edeb25233506f
font_02_sfnt_off00011caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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