Malicious PDF — malware analysis report

Static analysis result for SHA-256 50a07351c7393a1a…

MALICIOUS

PDF

72.4 KB Created: 2021-03-22 01:15:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20af6fc443c089b23a8d86ff51c3a899 SHA-1: d2ceed2df62a4ba35a1717bdcbc6b03a3051155a SHA-256: 50a07351c7393a1ac9d49c8e51bb4bad5d9760427e4d300c4bde5758ec0c5ef1
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, https://baarspo.ru/award?keyword=panasonic+av+hs410+pdf, suggests a phishing lure related to a Panasonic product. While no scripts were explicitly extracted, the PDF format and the presence of external URIs are common for phishing campaigns, often leveraging embedded JavaScript to redirect users. The document body appears to be malformed or heavily obfuscated, preventing a clear understanding of its content beyond metadata.

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://baarspo.ru/award?keyword=panasonic+av+hs410+pdf
    • https://cdn.sqhk.co/novitovikor/pge2Rgi/turbo_river_racing_mod_apk_download.pdf
    • https://cdn.sqhk.co/kowumutajaw/djgljhd/putisuzel.pdf
    • http://pubggaming.online/viwamapizufasijukikavazgz4gw.pdf
    • http://xitnet.fun/70142475760jvo8g.pdf
    • https://cdn.sqhk.co/mixaluwekitu/difkjgw/good_running_halloween_costumes_for_a_couple.pdf
    • https://cdn.sqhk.co/nodebono/hbI6gea/mikecrack_youtuber_wikipedia.pdf
    • https://cdn.sqhk.co/gujowaxexag/uphemEP/1192023037.pdf
    • https://cdn.sqhk.co/bubiwalifeda/Zhd7PSI/schumann_resonance_7._83_hz_generator.pdf
    • https://cdn.sqhk.co/feguzuvubut/dgijiih/joperovapav.pdf
    • https://cdn.sqhk.co/jumifokujuje/mj4Ykgc/my_t_mobile_app_is_not_working.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://forojiwimudobo.atwebpages.com/razegokoxovi.pdf
    • https://uploads.strikinglycdn.com/files/65a9366d-39db-4b85-95b5-e050f4374c01/does_xfinity_have_a_wireless_tv_box.pdf
    • https://uploads.strikinglycdn.com/files/782e499a-de7a-4a58-9cf4-a02f982185a0/riwunofabuwozofupimep.pdf
    • https://uploads.strikinglycdn.com/files/ebf464f2-e7d2-4497-b1b7-d0ec9b3dcf46/pali_canon_buddhism.pdf
    • http://xologikaju.atwebpages.com/gagamuzar.pdf
    • https://uploads.strikinglycdn.com/files/cfb4e6e8-b796-42ab-85da-72e2db57cbac/vozutololonabafes.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_off0000dad5.bin
596697dc4d96c1b2b63fb2f0c04c5095d13472369d57df6b8c0b3574899893f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD5 5456 bytes
font_01_sfnt_off0000ed7c.bin
fd3126dbdab998952fd1fc7e43b7a1866efb47ede75b29cdd1dddea65b2ba923
pdf-font-stream PDF embedded font (sfnt) at offset 0xED7C 11568 bytes