Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3b6bc0de1c0259…

MALICIOUS

PDF

83.5 KB Created: 2021-03-29 07:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ebe08eaa7ec2cf694af4b20649fc3d4 SHA-1: b49d794c60cdcec233d774e0cdc99ff9e055a5c7 SHA-256: 2a3b6bc0de1c0259bf4a782b3d4150423937e65637b080b415568ea6f4aec6de
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to zodiac information, which is a common tactic for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jacksth.ru/wix?keyword=la+luna+sangre+july+7+zodiac
    • https://cdn-cms.f-static.net/uploads/4484359/normal_6037c90a2c402.pdf
    • https://static.s123-cdn-static.com/uploads/4490364/normal_5fce869161fd7.pdf
    • https://cdn.sqhk.co/tesinogopano/gjChaid/swat_movie_cast_name.pdf
    • https://tugesarafexo.weebly.com/uploads/1/3/5/3/135319839/e336abe8dfd4.pdf
    • https://cdn-cms.f-static.net/uploads/4417543/normal_6011742b94902.pdf
    • https://cdn.sqhk.co/wofikubid/ggbIhgc/home_assistant_docker.pdf
    • https://cdn.sqhk.co/runudori/cUig9hi/85861461060.pdf
    • https://static.s123-cdn-static.com/uploads/4488855/normal_5ffd9d5057c12.pdf
    • https://kivuvuvilex.weebly.com/uploads/1/3/2/7/132741385/vubetivunono.pdf
    • https://cdn-cms.f-static.net/uploads/4420776/normal_605c7089581b0.pdf
    • https://cdn.sqhk.co/moxulofilose/gggPKYK/xibegukurepadutofegikupa.pdf
    • https://cdn-cms.f-static.net/uploads/4495271/normal_604773ec6535d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/takurugilij/thimiru_pudichavan_cut_ringtone.pdf
    • https://uploads.strikinglycdn.com/files/d4a29a61-ba4d-4029-b1ae-f104d6c5ddbe/1005644498.pdf
    • https://uploads.strikinglycdn.com/files/e3352671-a0da-4c87-9395-f497aed67ee5/2014_honda_cr_v_user_manual.pdf
    • https://s3.amazonaws.com/wutisigila/37079049185.pdf
    • https://s3.amazonaws.com/wizuluworafid/buguzejowovewe.pdf
    • https://uploads.strikinglycdn.com/files/daaa30a7-11b7-4a13-a814-88889ddc6ae9/sat_test_practice_khan_academy.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef78.bin
b05a989f980fe3c15b24c77f473308b66d9ce4170fe5797479d3cea18711752d
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF78 5356 bytes
font_01_sfnt_off000101db.bin
ed44b4afe75fec6f6533513049a9d3f993b851217c6ed68c9705200dbd08ea21
pdf-font-stream PDF embedded font (sfnt) at offset 0x101DB 11556 bytes
font_02_sfnt_off00012909.bin
9c41dc16ac1500073d35e6e6536bd916d37f2436d2a647853296fdac9269ccee
pdf-font-stream PDF embedded font (sfnt) at offset 0x12909 16304 bytes