Malicious PDF — malware analysis report

Static analysis result for SHA-256 faeb7eb0a580313c…

MALICIOUS

PDF

73.4 KB Created: 2021-03-19 14:31:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 166b9eae002b655679915dd150c22862 SHA-1: bb32fc028104cc08d51f70a9f67d3d1bd4ece473 SHA-256: faeb7eb0a580313ca93ced7f4e55b673baef28fc741b8211de821057a9ac19f5
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is a common tactic for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://resalured.ru/wix?keyword=january+2018+algebra+2+regents+conversion+chart
    • https://rewovokikulige.weebly.com/uploads/1/3/1/3/131379935/92810.pdf
    • https://nojabepeteguki.weebly.com/uploads/1/3/4/6/134669956/5411587.pdf
    • https://fadasizoguwo.weebly.com/uploads/1/3/6/0/136050507/7953245.pdf
    • https://tuziroxakitisa.weebly.com/uploads/1/3/4/6/134613497/6087979.pdf
    • https://cdn-cms.f-static.net/uploads/4416495/normal_600b0594686d4.pdf
    • https://vakogupomuniv.weebly.com/uploads/1/3/4/6/134610568/9063415.pdf
    • https://cdn-cms.f-static.net/uploads/4384295/normal_6035dd7c56f89.pdf
    • https://bonuwokepav.weebly.com/uploads/1/3/4/5/134592975/f62b40be9337.pdf
    • https://cdn-cms.f-static.net/uploads/4483081/normal_6051356584e8e.pdf
    • https://static.s123-cdn-static.com/uploads/4406202/normal_5ff179331003e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vapite/hd_abstract_wallpapers_for_android_phones.pdf
    • https://s3.amazonaws.com/nitidadufetenu/14964739480.pdf
    • https://uploads.strikinglycdn.com/files/9c9704cb-a02c-4bb5-b952-b0e6f2b2fc1c/the_endless_summer_2_vhs.pdf
    • https://uploads.strikinglycdn.com/files/d7262639-e6fe-434e-b148-3effe7a3a3d8/introduction_to_biblical_interpretation_3rd_edition.pdf
    • https://uploads.strikinglycdn.com/files/5150ab6b-b318-4d4b-a0db-b3aed5b5cdf3/blackberry_classic_2020_whatsapp.pdf
    • https://s3.amazonaws.com/risalenefazozo/megimukivajukekamoximeguj.pdf
    • https://s3.amazonaws.com/zeworibuzoza/liruxobawakutanikotigejaj.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df06.bin
7355781dc723ad722b3e608bdf5026b6100165410b33a8b455758bfd3f3689c2
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF06 5872 bytes
font_01_sfnt_off0000f30c.bin
c0941f1e0a6ae7bbc4adb6d93cd3fc268eda2f6aedbf37cf71e92cf3748220bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xF30C 10948 bytes