Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95e5c1fc7636e38…

MALICIOUS

PDF

617.8 KB Created: 2021-03-24 07:10:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19d1f972e6bbf6e343301ddd1fc8aac9 SHA-1: 802411ea3cab4fa5dca2462c86dccc32500d45ee SHA-256: e95e5c1fc7636e386fd321b79f535b05a9eac038ad36bf4240edafb5d4b35730
136 Risk Score

Malware Insights

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

The sample is a PDF document flagged by ClamAV and a machine learning classifier as malicious. Heuristics indicate it uses an advance-fee scam lure, presenting language related to lotteries or prizes combined with parcel delivery requirements. While no scripts were explicitly extracted, the presence of embedded URLs suggests a potential for downloading further malicious content or redirecting the user to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8490

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://druttle.ru/wix?keyword=ap+human+geography+study+guide+ethel+wood
    • https://tujurexi.weebly.com/uploads/1/3/4/7/134743655/7518941.pdf
    • https://static.s123-cdn-static.com/uploads/4383800/normal_5ff801e8c45ec.pdf
    • http://babixuxuw.22web.org/74494962261.pdf
    • https://cdn-cms.f-static.net/uploads/4475988/normal_60270c4d6d5f7.pdf
    • https://kexidenixerebez.weebly.com/uploads/1/3/4/4/134467946/nipaxanusamob.pdf
    • https://cdn-cms.f-static.net/uploads/4385614/normal_6016eba3de6e9.pdf
    • http://palopepidek.mypressonline.com/50813867224.pdf
    • http://miruzoguke.iblogger.org/ibm_trusteer_rapport_firefox.pdf
    • http://sarobivavoma.iblogger.org/how_to_reset_polaroid_bluetooth_speaker.pdf
    • http://lovukexux.iblogger.org/77320801902.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rurovikejigibu/gcf_questions_and_answers_grade_7.pdf
    • http://lisotabisalak.epizy.com/jakexatagidusanurito.pdf
    • https://s3.amazonaws.com/xarojapi/charlie_full_movie_free_tamilrockers_400mb.pdf
    • http://jolasesiv.epizy.com/interaction_design_principles_and_guidelines.pdf
    • http://xagazusapikim.epizy.com/8563593680.pdf
    • http://wivufaw.epizy.com/36879182878.pdf
    • http://nabenejajoko.myartsonline.com/basic_beliefs_of_christianity.pdf
    • http://wexoxanifew.epizy.com/nelson_textbook_pediatrics_online_reading.pdf
    • https://s3.amazonaws.com/lofese/just_listen_sarah_dessen.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_off00095ba1.bin
25260f5a0e561b2d65b591c342d09375d8d02eab0f048ad608e613e2df48f14f
pdf-font-stream PDF embedded font (sfnt) at offset 0x95BA1 5556 bytes
font_01_sfnt_off00096e7a.bin
a6630e04c0d0111d9ca763eac85fa2d0209590b54179691ee345fdfcde86dec4
pdf-font-stream PDF embedded font (sfnt) at offset 0x96E7A 12308 bytes