Malicious PDF — malware analysis report

Static analysis result for SHA-256 44bdf77d9d017b2b…

MALICIOUS

PDF

73.9 KB Created: 2021-03-10 13:03:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b44c5320f52badf0639bdc27456320d9 SHA-1: ed03c0db5cda0e9ef43aefb78a97130cb6d6c4b1 SHA-256: 44bdf77d9d017b2be4db81e2e17c45afdce1f98d4114af6f42550105b401968f
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and a machine learning classifier. The document body, though heavily obfuscated, suggests a lure related to financial analysis, likely intended to trick users into clicking the malicious link. The presence of embedded URLs and the ML classification strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/award?keyword=importance+of+break+even+point+analysis+pdf
    • http://sadovik.me/husqvarna_435_chainsaw_pricesdx4g.pdf
    • http://fakoxipedobuk.22web.org/california_residential_lease_agreement.pdf
    • http://lofitner.buzz/46332632099lgqq2.pdf
    • http://zesamoa.online/nuwugonujifijikizhe9w.pdf
    • http://ionatr.fun/the_adventures_of_tom_sawyer_short_summaryjxb7a.pdf
    • https://static.s123-cdn-static.com/uploads/4370528/normal_5fe41fd308134.pdf
    • http://bluebadge-support.com/lajumito7xy6.pdf
    • http://perfectiona.online/wikujaditejewitorubiwobio0cs6.pdf
    • http://joritirumag.mypressonline.com/kelumowifavesusejopepiki.pdf
    • http://particulieres-societegenerale.best/nukitirefibagakorrb.pdf
    • https://static.s123-cdn-static.com/uploads/4426270/normal_5fdf7057eb9b9.pdf
    • http://famozosivupiwij.sportsontheweb.net/our_man_in_havana_audiobook_youtube.pdf
    • http://xukosususif.medianewsonline.com/tipos_de_alveolitis_dental.pdf
    • http://1xbets-regs.site/91994399392p6bdj.pdf
    • http://bejonigu.22web.org/71447461592.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xapemekofutomun.rf.gd/miracle_thunder_latest_setup_2._98.pdf
    • http://mamawelujuke.rf.gd/kilujuzazesazopenuz.pdf
    • https://s3.amazonaws.com/tamobalasu/16378595519.pdf
    • https://s3.amazonaws.com/wupagivoz/scientist_coldplay_piano_sheet_music.pdf
    • https://s3.amazonaws.com/putelekireza/magnesium_most_bioavailable_forms.pdf
    • http://vimixof.onlinewebshop.net/vegavojeper.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_off0000e2c0.bin
0cefabfcd260ad91416099b20827994cdadbb912dd00e4d5933eb5f6cbed6734		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C0 5604 bytes
font_01_sfnt_off0000f5c1.bin
98af3d2010081ec7681134374eff90bc1588dc2224dd5f87ee464f5674dc3118		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C1 10760 bytes

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