Malicious PDF — malware analysis report

Static analysis result for SHA-256 b172a6ec07a6ad62…

MALICIOUS

PDF

67.1 KB Created: 2021-01-01 03:02:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e64de4f950bce242fe09f35cf738c825 SHA-1: 72ce3f3aa6b22adc0340208bd8d66a7474e80bd2 SHA-256: b172a6ec07a6ad62b0fbef8f6a1ca0f7bc94a8d1f4a2d0285c4e6e7f621b8b23
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 'https://ggtraff.ru/123?utm_term=atomic+structure+worksheet+answers+pdf'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ggtraff.ru/123?utm_term=atomic+structure+worksheet+answers+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f9cd95979e2d.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/zasepo/firixavalopil.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/pyrrhic_form_in_poetry.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/bittersweet_miranda_beverly-_whittemore.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/amanat_ali_new_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/wedewarugonakawewu.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/bitexco_group_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/gigegarudozez.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/pusaxesi.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/befunky_photo_app.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/wederisitavavibezuvoxeku.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/33483361893.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/xizomusirugajijar.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_off0000cadf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCADF 5508 bytes
SHA-256: 8b0292f36292bdf00e192fe8f4f7e92d471e8371419ad0c53a621976c0a82fbb
font_01_sfnt_off0000dd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD87 9992 bytes
SHA-256: 393ea6cc15f64735c66ed73c3cdc45ff4b83671c8fc6fcf25c1781496bc63eef

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