Malicious PDF — malware analysis report

Static analysis result for SHA-256 38eab8098949a7bd…

MALICIOUS

PDF

69.6 KB Created: 2021-03-04 20:26:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: f20b6e3f69031d641351281807d18e79 SHA-1: 2f506f9707f012adbbf66898c35312c7d9522c7d SHA-256: 38eab8098949a7bd3de47278cfb597a3e53ff6a63441c324c71f1dfb99dd9ce1
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The sample is a PDF document flagged by multiple heuristics as malicious, including a ML classifier and ClamAV detection. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick users into calling a phone number, a common tactic in callback phishing and tech-support scams. An external URI was also extracted, suggesting the document may lead to further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/strik?utm_term=siriusxm+stratus+7+satellite+radio+with+vehicle+kit+installation PDF link annotation
    • https://cdn.sqhk.co/xurajalijok/je4djek/open_hp_laptop_in_safe_mode_windows_10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392659/normal_603eb952ecced.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425910/normal_5ffe1b12c89e3.pdfIn PDF document text
    • http://kozevoviwepok.iblogger.org/sorogenedoleteb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413223/normal_6018a145210d5.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/audacity_remove_vocals_software_free.pdfIn PDF document text
    • https://cdn.sqhk.co/mepetiruzi/ifjjLih/classic_phone_ringtones.pdfIn PDF document text
    • http://kirudina.iblogger.org/storyboarding_template_google_slides.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449974/normal_5fd8781e4403e.pdfIn PDF document text
    • http://kekisire.22web.org/44557901269.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxokakijefe/hgDiaAT/wanozojunezila.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/ZxBifge/healthy_fruit_smoothie_popsicle_recipes.pdfIn PDF document text
    • https://cdn.sqhk.co/lolumebitana/upieuKn/gba_emulator_free_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/rilewika.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/amnesia_song_by_5sos.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/good_luck_chuck_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/lymphatic_and_immune_system_practice_test_answers.pdfIn PDF document text
    • http://kupezoru.rf.gd/kalimuwigabarupadusiz.pdfIn PDF document text
    • http://nisijavifusepov.epizy.com/88763236299.pdfIn PDF document text
    • http://venizowazuzi.epizy.com/93239290929.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/93707215461.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/already_beyonce_and_shatta_wale.pdfIn PDF document text
    • http://fopekexu.epizy.com/kowexavozediturawe.pdfIn PDF document text
    • http://xakosafejel.epizy.com/census_2009_kenya_results.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/zaxupo.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_off0000d1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BC 5644 bytes
SHA-256: 300c85e4c085d3e0b8a3379f6ac60b5c6a3eb49a0dcba11616e6c7a32f8fe3c7
font_01_sfnt_off0000e4e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E2 10392 bytes
SHA-256: 252317db4dfbf06f5bc727028d015df4c4345af411da62482b4e8e9397d79d02

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