Malicious PDF — malware analysis report

Static analysis result for SHA-256 24468f14daebaa18…

MALICIOUS

PDF

78.7 KB Created: 2021-05-18 03:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a1c1754ab034f9c1694e051fab448a07 SHA-1: b8d2ac71bc919037c39d6ccfeefe62eac89e3662 SHA-256: 24468f14daebaa18620aba8f3bbcf1871c8b83c92ea37155cb5de093f567a529
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://resalured.ru/strik?utm_term=how+many+questions+can+you+miss+on+the+servsafe+test PDF link annotation
    • http://modebedunizux.iblogger.org/element_40_inch_smart_tv_reviews.pdfIn PDF document text
    • http://xawinewilapirog.iblogger.org/mapa_politico_andalucia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453754/normal_5fc8dcb995174.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459035/normal_6006e461c7c72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468550/normal_60248f4fb62c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375909/normal_604d67d923fa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426967/normal_6061b5e416bac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455195/normal_603f77f713143.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_604ccbb661fd6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pedonasupag.rf.gd/6474111289.pdfIn PDF document text
    • http://jenurinufaka.rf.gd/fuzewutipibuwuwigu.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/weber_grill_restaurant_schaumburg.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/wijuzerorutawekazo.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/breach_anti_social_behaviour_order_sentencing_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/turininamevigaxavilovonu.pdfIn PDF document text
    • http://vowaderisosalel.epizy.com/bairi_kangana_2_movie_ing.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/gevumo.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/92170452513.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/appium_android_driver_github.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E0 5428 bytes
SHA-256: 6377cb095b13ccb10e5c857d35294de57c79c601136290b2c65bddd0c22e7a76
font_01_sfnt_off00010549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10549 11732 bytes
SHA-256: dfd05c9de51680455bbc5dd526e5547c3236710144ad4d240a5d30f0d7ca5352

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