Malicious PDF — malware analysis report

Static analysis result for SHA-256 669617841235067e…

MALICIOUS

PDF

72.5 KB Created: 2021-02-12 16:10:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: cb5201e0fa180960a7635cc6a389f1ef SHA-1: e09deac09f59d88fb933ecc6a9bceada2308ef19 SHA-256: 669617841235067e62c87810d5e9a821d0a9dc76026ed0ba122fb5d2bbfff8af
154 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical alert for a malicious redirector link and a high-confidence ML classification. The embedded URL points to a known malicious redirector, suggesting an attempt to lure the user to a compromised site. No scripts were extracted, but the PDF structure and the presence of malicious URLs indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=mini+militia+mod+by+sahad+ikr+apk+pure In PDF document text
    • https://cdn.sqhk.co/relulapezele/ghehgjc/minecraft_pe_modern_redstone_house_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzalolotagi/Lhij3Dd/84261741331.pdfIn PDF document text
    • http://tuvawom.iblogger.org/vamima.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/hdhcJjf/tigidivepo.pdfIn PDF document text
    • http://sunepoxuvigos.66ghz.com/nha_ccma_exam_study_guide.pdfIn PDF document text
    • http://jabofuzo.22web.org/jotonakolabepoxapi.pdfIn PDF document text
    • http://zolekumosex.iblogger.org/devextreme_datagrid_group_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sonisan.epizy.com/the_perfect_storm_full_movie_free.pdfIn PDF document text
    • http://namutogenasokab.epizy.com/cross_multiplying_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/ruvanififimunadafumuret.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/52787077259.pdfIn PDF document text
    • http://wuzuvulas.epizy.com/possessive_pronouns_worksheet_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/55876005946.pdfIn PDF document text
    • http://zazisuj.epizy.com/elijah_and_the_widow_coloring_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/32472583180.pdfIn PDF document text
    • http://pebimomedunuzux.epizy.com/white_bass_fishing_report_bull_shoals.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_off0000df0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF0F 5508 bytes
SHA-256: 88066273e8162cf7463f8f9484f0bb280baf8c7fe4fdb5c973e7c848f1367510
font_01_sfnt_off0000f1a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A4 10300 bytes
SHA-256: cae1717ee91af280f457642a70ee49f0beed91f91fb188b53bd85bdd50c41660

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