Malicious PDF — malware analysis report

Static analysis result for SHA-256 79994684c575b6f7…

MALICIOUS

PDF

87.9 KB Created: 2020-11-27 21:48:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 93986d761102889fdfcaa07bd0d31e73 SHA-1: 9ae4374bb72390b5a55ec2936a78f0e2e48fa4b9 SHA-256: 79994684c575b6f7425a580edc1f4464db94d0a8d23c44810206fb4dfa92c257
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://cctraff.ru/123?utm_term=digimon+world+dusk+armor+digivolve+guide In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/81103248019.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/gutirod.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/c_language_notes_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/tetris_mills_eagles.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/banidederoti.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/boxing_live_2_hacked_mods.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/ruwijemijeduvomirajo.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/making_inference_worksheets_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/marijuana_news_arizona.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/beware_of_the_doghouse.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/super_smash_bros_for_3ds_rom_decrypted_us.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/14429436701.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 1

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_off0000e4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E8 11516 bytes
SHA-256: 6bed1771687f40446bfc8953cc7abaf1cd7950f1c58c5077d0c88af453b99050
font_01_sfnt_off00010a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A90 5360 bytes
SHA-256: 89161800e746c32f9fa00a3676629678b8e9525d6e8cc27f43941a25564dc38d
font_02_sfnt_off00011cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CC7 6064 bytes
SHA-256: 2477e0df9b39af1d00c9cc27629e3f698053f9f1eadc0b465711b4ef1e381bd4
font_03_sfnt_off00012c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C4E 10668 bytes
SHA-256: 21de4a195479c9a08897b56cba43525b039e1721539b3640d337d33dff590b51

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