Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ba0edd32cba0a90…

MALICIOUS

PDF

109.2 KB Created: 2021-03-14 09:06:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9787da9194f8920f44c276fa5b26e0ab SHA-1: 77fd5232fcde282b1c450e5b528604c4af5b40f8 SHA-256: 7ba0edd32cba0a900183f3047dcd88924e10e9831439ff4706257e5097bd4329
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that leads to a website offering 'award' or lecture notes, a common lure for phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the nature of the lure suggest the document is designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://ponafet.ru/award?keyword=sociology+of+health+and+illness+lecture+notes+pdf
    • https://jawejeletisib.weebly.com/uploads/1/3/4/8/134886371/tumex_ziduvubimoxiv_zufugikuranetew_lixakuraxepir.pdf
    • http://bijopesenof.iblogger.org/formas_de_usar_una_chalina_con_vestido.pdf
    • https://cdn-cms.f-static.net/uploads/4368996/normal_6049b6c476871.pdf
    • https://static.s123-cdn-static.com/uploads/4381751/normal_5fc919b5dac9c.pdf
    • http://nokilibetajew.mywebcommunity.org/82260782021.pdf
    • http://bestita.space/logopazopitimibqgnrc.pdf
    • http://theraisins.pro/what_language_is_the_pali_canon_written_in16s99.pdf
    • http://meetsalon.xyz/majoloxotuwaxilarofofilkj5me.pdf
    • https://static.s123-cdn-static.com/uploads/4459054/normal_5ffbadc1d8958.pdf
    • https://cdn-cms.f-static.net/uploads/4417226/normal_603211223a889.pdf
    • https://static.s123-cdn-static.com/uploads/4386621/normal_5fdd1552a74cf.pdf
    • http://creamwalls.space/genaxasoratixilis64fti.pdf
    • https://muwunijika.weebly.com/uploads/1/3/1/3/131398004/5422644.pdf
    • https://jopulovi.weebly.com/uploads/1/3/4/2/134265775/60daf.pdf
    • https://static.s123-cdn-static.com/uploads/4455207/normal_5fe52706b4d82.pdf
    • https://jositaloj.weebly.com/uploads/1/3/4/0/134042718/4658507.pdf
    • https://cdn-cms.f-static.net/uploads/4473359/normal_5fd634a0aa0ff.pdf
    • http://new-leggins.site/96316722613wwh1q.pdf
    • https://static.s123-cdn-static.com/uploads/4479710/normal_5ffebb4862298.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fijetetesozaw.epizy.com/documentary_end_credits_template.pdf
    • http://tiluxusimutine.atwebpages.com/nomifarifasikozexuno.pdf
    • http://rufuxikokuka.rf.gd/28122295229.pdf
    • http://kisolapuri.rf.gd/manualidades_de_otoo_infantil.pdf
    • http://gitodake.myartsonline.com/48482635105.pdf
    • http://weralawubuzeg.epizy.com/applied_mathematics_3_information_technology.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_off00016966.bin
443f5fd64c52b13a3bc882d3d3df6ccfad09c732c29d37c7be551dfe0336fd69
pdf-font-stream PDF embedded font (sfnt) at offset 0x16966 5620 bytes
font_01_sfnt_off00017c8c.bin
340099a3b2140a0acad28a86e1fca1e96d80a864120152014e85906c3f5d4f61
pdf-font-stream PDF embedded font (sfnt) at offset 0x17C8C 11652 bytes