Malicious PDF — malware analysis report

Static analysis result for SHA-256 725c2a03c424f245…

MALICIOUS

PDF

84.4 KB Created: 2021-01-22 23:39:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0117d037ea8326f8edfa66f5f3f26805 SHA-1: e91df6648a3e18940e9e1b829cca2447936cadbd SHA-256: 725c2a03c424f2457e57079ccda6b5d82ee2b7b2ff2447de561d9caa364acffb
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI and a visual download button suggests a phishing or social engineering attack aimed at tricking the user into downloading a payload. The document body, though heavily obfuscated, contains text related to 'Bsc bed form last date 2019 odisha', potentially part of a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafficel.ru/aws?utm_term=bsc+bed+form+last+date+2019+odisha
    • https://static.s123-cdn-static.com/uploads/4420025/normal_5fcc40645ded8.pdf
    • https://static.s123-cdn-static.com/uploads/4445882/normal_5ff2f4c6a5d70.pdf
    • https://cdn-cms.f-static.net/uploads/4410702/normal_5fd13df0a3b99.pdf
    • http://guvizaw.22web.org/you_are_the_reason_sheet_music.pdf
    • https://cdn-cms.f-static.net/uploads/4404953/normal_5fdacd5f6369c.pdf
    • https://cdn-cms.f-static.net/uploads/4491157/normal_5fe938dd0bc33.pdf
    • https://static.s123-cdn-static.com/uploads/4423442/normal_5fc61492b4f2a.pdf
    • https://static.s123-cdn-static.com/uploads/4485929/normal_6001655475f02.pdf
    • https://static.s123-cdn-static.com/uploads/4449410/normal_5ff608707f9e9.pdf
    • http://tufidifegoz.66ghz.com/chammak_challo_songs.pdf
    • https://cdn-cms.f-static.net/uploads/4384633/normal_5fea2ec5608d4.pdf
    • http://bofesota.66ghz.com/panipen.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://loxosufodu.epizy.com/finances_excel_sheet.pdf
    • http://rajamuviw.epizy.com/78491146975.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_off000109a5.bin
62d7a3349e8c8ba1a9c19cae733ba9327527b5369a757c917e999603879dd3ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x109A5 5932 bytes
font_01_sfnt_off00011da9.bin
45ecce7d13808a779f4191b573d6abe50adc50f8fb8ab935c1309f27efbe2b46
pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA9 10984 bytes