Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e0fbb0e4ced456…

MALICIOUS

PDF

81.6 KB Created: 2021-03-22 11:55:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44e48c4dcf1527065c61ef6fa89f6355 SHA-1: 53c2fcdb7edede90365984e1ff924b77089e8e32 SHA-256: 00e0fbb0e4ced456bf47ad7ea3491466df7c71506f8f381e6ab812b81d26cfc0
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating embedded URLs and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, contains text related to 'avg pc tuneup 2018 product key free', suggesting a lure for potentially unwanted software. The presence of external URIs points to a download or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=avg+pc+tuneup+2018+product+key+free
    • https://cdn.sqhk.co/nosimasiv/jdFqmja/kawafevisefizubor.pdf
    • http://nibewubixela.getenjoyment.net/vakobideg.pdf
    • http://sevowina.medianewsonline.com/pevejewigodupulo.pdf
    • https://cdn-cms.f-static.net/uploads/4413227/normal_6011ef6f7e216.pdf
    • http://dadivasim.sportsontheweb.net/74443098464.pdf
    • http://kuxogajow.iblogger.org/esl_english_worksheets_printable.pdf
    • https://static.s123-cdn-static.com/uploads/4485163/normal_5ffffb8ac83d1.pdf
    • http://jivusibofonefud.mygamesonline.org/interior_designing_games_online.pdf
    • http://xepomujix.22web.org/89948221478.pdf
    • http://bufezipuduxev.mywebcommunity.org/59540500129.pdf
    • https://cdn.sqhk.co/puxolika/i6O2iek/rikifixolev.pdf
    • https://cdn.sqhk.co/ramawuvade/iagrVOG/ark_survival_guide_book.pdf
    • http://lesuxofozadize.mygamesonline.org/how_to_get_entry_level_data_science_job.pdf
    • http://gixipures.sportsontheweb.net/friends_like_these_huh_gary_gif.pdf
    • https://cdn-cms.f-static.net/uploads/4421209/normal_605556a9c2734.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dazesokagevak.rf.gd/11875483554.pdf
    • https://uploads.strikinglycdn.com/files/53338c8a-a89a-431b-b237-b54e6e356d08/bodybuilding_exercise_routine.pdf
    • https://uploads.strikinglycdn.com/files/29ec0bdd-be49-4181-84fc-95aad19740f5/jififuzoterune.pdf
    • https://uploads.strikinglycdn.com/files/f1ce465f-a51f-467a-bf64-8bcab8e0f25b/song_of_ice_and_fire_westeros_map.pdf
    • https://uploads.strikinglycdn.com/files/afc7d2a8-35a4-4238-a88b-fe267adc910a/internal_audit_training_courses.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f46d.bin
4399251f3ff9c32b4a9f4bdfef8dd80daf17cd90e26bef30a005ee4ef1483c05
pdf-font-stream PDF embedded font (sfnt) at offset 0xF46D 5472 bytes
font_01_sfnt_off00010738.bin
29b131de9de5c5370047890f6e756039ad0ba8bd4e67da85cc5b0b34a1cedd22
pdf-font-stream PDF embedded font (sfnt) at offset 0x10738 10420 bytes
font_02_sfnt_off00012aae.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x12AAE 4324 bytes