Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1a1a037bceae013…

MALICIOUS

PDF

85.3 KB Created: 2021-03-23 22:14:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1077aca6713bb64d95a91413a2a25851 SHA-1: 90ef737bc89638130677fa0c6fa44834c2a6acf8 SHA-256: d1a1a037bceae013b13241bb8b28e80edcdc5d75c1750e386d77be10a7c3403e
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though partially corrupted, suggests a lure related to 'bird aviary plans'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://seumenha.ru/award?keyword=bird+aviary+plans+pdf
    • http://mon-cmbretagne.com/575259444916f5t3.pdf
    • http://genusadnlo.space/laluwozepurubimixbgzj1.pdf
    • https://pirodiditabun.weebly.com/uploads/1/3/0/9/130969169/d3f39501.pdf
    • http://the-job.ru/dofesematafapa31fd6.pdf
    • http://sweetmeet.online/adguard_premium_apk_3._2._119we6tl.pdf
    • https://fajizaxaro.weebly.com/uploads/1/3/1/3/131381717/kumupoli.pdf
    • http://levotavo.scienceontheweb.net/4489416221.pdf
    • http://lasns.fun/vefoxusudu66m7w.pdf
    • http://wowitaly.pro/nzm_hikmet_ksa_iirleriywr7s.pdf
    • http://mx50off.info/best_spanish_frequency_dictionarytuikx.pdf
    • https://vufosaxirit.weebly.com/uploads/1/3/4/0/134018891/jalipokebiwodada.pdf
    • http://migipobazu.mypressonline.com/calendario_2020_colombia_para_imprimir.pdf
    • http://dlkmvkoenv.info/xironepegedetigaxasoyx9ve.pdf
    • http://fuvidevifa.scienceontheweb.net/announcement_memo_sample.pdf
    • https://dedolodaramolon.weebly.com/uploads/1/3/1/4/131455072/ca2559e6b9dab76.pdf
    • https://xikudamoxi.weebly.com/uploads/1/3/4/5/134576601/tutetev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/timeziso/46664357982.pdf
    • http://sifebitufol.onlinewebshop.net/little_book_of_currency_trading.pdf
    • https://s3.amazonaws.com/bufexa/57386337949.pdf
    • https://s3.amazonaws.com/wukevirenesu/kentucky_ktap_guidelines.pdf
    • http://garaben.rf.gd/brayton_cycle_efficiency.pdf
    • https://s3.amazonaws.com/jolituzoji/46043855994.pdf
    • http://fixadamobus.epizy.com/abstract_algebra_problems.pdf
    • http://wuriwafu.epizy.com/platforma_obywatelska_program.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_off00011090.bin
0842b49a7d39e69a83fbb9b0d223884c872c7a625f42e6568d415e2150cc9d72
pdf-font-stream PDF embedded font (sfnt) at offset 0x11090 5244 bytes
font_01_sfnt_off00012285.bin
6adfc16098dc4d11c22ed085ca81c93a81936f40d23eab229a83bf4ee059f73a
pdf-font-stream PDF embedded font (sfnt) at offset 0x12285 11056 bytes