Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22e9dc947f50fe2…

MALICIOUS

PDF

62.4 KB Created: 2020-12-22 22:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea5a3db793e6c4004ece8fa48763e2a2 SHA-1: ed2046c36ca84f39b216af13eeb0017a370fccbd SHA-256: c22e9dc947f50fe28202003bf59f5547a781d35655aec31840b7857fa6e2bf64
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://gettraff.ru/aws?utm_term=guided+meditation+hypnosis+astral+projection'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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?utm_term=guided+meditation+hypnosis+astral+projection
    • https://static.s123-cdn-static.com/uploads/4382779/normal_5fc5eb722bac3.pdf
    • https://cdn-cms.f-static.net/uploads/4462732/normal_5fae5677c8c60.pdf
    • https://static.s123-cdn-static.com/uploads/4384484/normal_5fc5316c9d552.pdf
    • https://cdn-cms.f-static.net/uploads/4474222/normal_5fb33ad6b53cd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fde9718c66bff209e816f84/t/5fdf1b5c892c8943b0bafe78/1608457053636/16_point_observer_report.pdf
    • https://s3.amazonaws.com/jadudusujuje/dajilobedabisilapigovaj.pdf
    • https://s3.amazonaws.com/fotojipifuzitul/798243403.pdf
    • https://s3.amazonaws.com/vebogotexaf/citing_books_in_chicago_manual_style.pdf
    • https://static1.squarespace.com/static/5fc6ee7ea3ccef3526e8430a/t/5fd728945488895576c53aed/1607936148891/sports_tv_2._0_app.pdf
    • https://s3.amazonaws.com/bevarolimesale/suwajekavejeremeva.pdf
    • https://s3.amazonaws.com/zurovajij/penigut.pdf
    • https://s3.amazonaws.com/wupiwupiwot/christian_brothers_malayalam_film_songs.pdf
    • https://s3.amazonaws.com/memul/arcsight_investigate.pdf
    • https://s3.amazonaws.com/jadudusujuje/jurnal_agroteknologi_unej.pdf
    • https://static1.squarespace.com/static/5fc595465e8e827d42adb05d/t/5fd74463de5b1220c046661e/1607943267530/19508210550.pdf
    • https://s3.amazonaws.com/tadovu/gareropedukarudu.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_off0000b5cf.bin
c74bd298e7f5cdd5983c0f69da57e9cae4b9ed52a1efdadcdf00f5dbd672094c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB5CF 5520 bytes
font_01_sfnt_off0000c875.bin
6f44d0955484d23239a80758c65a2ec22047908b3cbd0ea11a0da408c40b56ab
pdf-font-stream PDF embedded font (sfnt) at offset 0xC875 10884 bytes