Malicious PDF — malware analysis report

Static analysis result for SHA-256 81768bc984e0b313…

MALICIOUS

PDF

72.0 KB Created: 2021-02-15 18:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11d6b6eef09093506035614c781899c5 SHA-1: 7b3ea19afd601d9dab8dd0be19c4a8e93f835450 SHA-256: 81768bc984e0b31308bdb90bc92c8b275a6b585a04ec27caf693e36cc65a21e2
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that mimics a search result for a book, suggesting a social engineering lure. While no scripts were directly extracted, the PDF structure and embedded URI indicate an attempt to redirect the user to a potentially harmful external resource.

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://seumenha.ru/wix?keyword=amulet+book+8+read+online+pdf
    • http://steblin.pro/award_show_ae_template_freej3mko.pdf
    • https://static.s123-cdn-static.com/uploads/4379982/normal_5ffd71b04e668.pdf
    • https://static.s123-cdn-static.com/uploads/4471691/normal_5ff762bb512d2.pdf
    • https://cdn-cms.f-static.net/uploads/4459162/normal_5fe791a558d1b.pdf
    • https://static.s123-cdn-static.com/uploads/4428052/normal_5fe41f8d39907.pdf
    • https://cdn-cms.f-static.net/uploads/4491151/normal_6016b5c91ebed.pdf
    • http://kopavavabigi.66ghz.com/national_treasure_movie_quotes_worksheet.pdf
    • http://remontnatali.ru/meridiani_mondadoriets7c.pdf
    • http://whysmall.space/55810592135dgmjp.pdf
    • http://soldonlakewood.com/99649994787eqe1j.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ritanuwo.epizy.com/aldous_huxley_collected_essays.pdf
    • http://xipipowateselok.epizy.com/45306245554.pdf
    • http://tenurusimuxu.epizy.com/masterarbeit_informatik_anforderungsanalyse.pdf
    • http://sabukizazuse.epizy.com/android_auto_wireless_apk.pdf
    • http://jimanujomubil.epizy.com/aafp_isfm_feline_friendly_handling_guidelines.pdf
    • http://gigivixegaxun.epizy.com/yooka_laylee_impossible_lair_achievement_guide.pdf
    • http://zuwosopawekaz.rf.gd/present_progressive_verbs_worksheet.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_off0000de05.bin
ba6b4a544a22b3c0ab51095d2288968b14f1d309e3b56fbc7f329dd9a187fb66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE05 5396 bytes
font_01_sfnt_off0000f048.bin
c5971f27504052df33314cd27c529a1f940d7238ccda4c21823d5171bbdd26d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF048 10204 bytes

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