Malicious PDF — malware analysis report

Static analysis result for SHA-256 e388b9b9df0a769d…

MALICIOUS

PDF

59.2 KB Created: 2020-10-31 04:05:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7acd223873e2afe734c7a9549c7be32e SHA-1: 11c39f2518b8f9e95aae570a2a868834f4051e11 SHA-256: e388b9b9df0a769dc6597aa29f4a15a8d8b4c6c300f639ce8759fc612c47de9b
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link disguised with a movie lure ('Superman 2020 actor') that redirects to a known malicious infrastructure. This indicates an attempt to lure users to a potentially harmful site. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://gettraff.ru/aws?keyword=superman+2020+actor In 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/wunupalezozerud/functional_training_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/beauty_and_the_beast_script_musical.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/116f83b0-8083-4726-8716-c8c71c9857fc/biwofalotuxomafo.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/cereal_box_template.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/34599335634.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/70859139258.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/93872891069.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/roderivuvaxavubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9f8fc7a-6d63-4cf6-b8d6-fecad194d2d0/molarity_and_molality_relation.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/completing_the_square_circle_equations.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/best_reader_for_windows_7_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/moxekibupuru/71688431040.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/wujevovozad.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/vaniwoledogagusekapubi.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/47599550543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ada4455-9bcf-4dee-8825-d9e12dbddb49/69077036083.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/formato_recibo_de_nomina.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A8B 5080 bytes
SHA-256: df91fddf290be6b85f12a2f76c06e9bc4154289c2b29573b82ca5fe18ba3ab5f
font_01_sfnt_off0000aba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA5 11136 bytes
SHA-256: e5a2e0461e2853b927cebadfc50e841ef155f8da7366ae781d93b5b2f14eb748
font_02_sfnt_off0000d12d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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