Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a0153777a62bcaa…

MALICIOUS

PDF

79.8 KB Created: 2021-01-22 22:51:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: da7890a29cc74868d349576ef54c720f SHA-1: 91a707c4ff00af998f8fea32eef4a6efdb94a677 SHA-256: 1a0153777a62bcaac10a298aa7b6d20a45a10131cb96fb23e19eac258720cc3f
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI and a high-severity heuristic indicating an image lure linked to an SEO redirector, which points to the URL https://trafficel.ru/aws?utm_term=bajrang+dal+song++mr+jatt. This suggests the document is designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/aws?utm_term=bajrang+dal+song++mr+jatt PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370062/normal_5ff9abae74fed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371244/normal_5ffcca81c0ac6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403413/normal_5feb1a41cc8d7.pdfIn PDF document text
    • https://site-1223352.mozfiles.com/files/1223352/bollywood_latest_video_songs_video_9__com.pdfIn PDF document text
    • https://site-1245158.mozfiles.com/files/1245158/caballo_de_troya_6_libros_gratis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482623/normal_5fc72a170c1e8.pdfIn PDF document text
    • https://site-1178617.mozfiles.com/files/1178617/pazotulavoxu.pdfIn PDF document text
    • https://site-1247956.mozfiles.com/files/1247956/48832307106.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482636/normal_5ffd76d734dde.pdfIn PDF document text
    • https://site-1175399.mozfiles.com/files/1175399/sigajoxenup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414491/normal_5fe6a85616bae.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/libeganot/xolusolopodugow.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/25193217030.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE51 5272 bytes
SHA-256: 0d2c093b87406437770527d50f117d62d7174e67f9b6b919791e315cf007415d
font_01_sfnt_off0000e022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE022 2024 bytes
SHA-256: a511fb262e2f240b0cc62b800179189f1c69c7b4d67d938f9bc0c5e12ef74554
font_02_sfnt_off0000e9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B7 15284 bytes
SHA-256: 8c9cfeddfaa72c2d713bb6706030d2b1c79602962e16ae8af9133fcbec3b4f8a
font_03_sfnt_off00011a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A83 16304 bytes
SHA-256: 2ec471bc1dd097ba7445d0d98fae4076614f7d308a936bf5c28a382db3fe60d2

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