Malicious PDF — malware analysis report

Static analysis result for SHA-256 06aa91f40af69ffc…

MALICIOUS

PDF

75.5 KB Created: 2021-02-19 11:10:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 95609913babb6d0dad6d9b8a783e152a SHA-1: 3bed28d6e0ed3b075728f3f310515781f68fc533 SHA-256: 06aa91f40af69ffc14c88e9882b5296a81fd5a0aecb0bb2d3e3c5c9f4d3bacd1
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'crophysi.ru', disguised as a download for the 'Avengers age of ultron script pdf'. This URL is likely used to deliver a phishing page or a second-stage malware payload. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', further indicating malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=avengers+age+of+ultron+script+pdf+download In PDF document text
    • https://cdn.sqhk.co/fabunavaxa/hehjigl/jodavisuxizifutifelutixa.pdfIn PDF document text
    • https://cdn.sqhk.co/nosilaxuziz/szdjaca/orange_tree_podcast_episode_6.pdfIn PDF document text
    • http://tixshopclub.fun/fonodimuwosifeat2.pdfIn PDF document text
    • http://iblack.space/gejinererug4mf.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/dhckpgh/26448549064.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/jehgiek/98795867002.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459463/normal_600e14ef7b62b.pdfIn PDF document text
    • https://cdn.sqhk.co/jepivitixiwo/d1NmidW/71640344912.pdfIn PDF document text
    • http://wordsideget.top/cinema_4d_free_3d_modelsevtcf.pdfIn PDF document text
    • http://reliables.ru/guzononeratisemapohno.pdfIn PDF document text
    • https://cdn.sqhk.co/rajosibakulu/fij5FnM/how_to_get_legends_limited_multi_z_power.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/60534462438.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/manual_da_geladeira_brastemp_clean.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/bookmarks_google_chrome_android.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_off0000e9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B7 5464 bytes
SHA-256: 08379412604ad501b4afbb118b0e866a4df61d111eaec4123a01949ad52cf248
font_01_sfnt_off0000fc7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7D 10752 bytes
SHA-256: fdddb50f112941d5370121a272bd3393faf00b617fec9712acada0b185552c9a

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