Malicious PDF — malware analysis report

Static analysis result for SHA-256 517b43a2393b440c…

MALICIOUS

PDF

68.5 KB Created: 2021-02-26 16:51:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 33d8f7b99f94a4041140d3df36df3fba SHA-1: 95294fb498ecdee81cf9db7a5f6d4c63ce5f212d SHA-256: 517b43a2393b440c0d9777af38d294a31f90f020944e87b2ec1443eb7f47e0d8
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware distribution. The document body, though partially corrupted, suggests a lure related to a "grand tree guide", likely intended to deceive the user into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/wix?keyword=the+grand+tree+guide PDF link annotation
    • http://golixudib.mypressonline.com/8845867908.pdfIn PDF document text
    • https://juvejisedebuz.weebly.com/uploads/1/3/2/7/132740880/a33033aa5cbfb.pdfIn PDF document text
    • https://fagugirawax.weebly.com/uploads/1/3/4/3/134388021/juvemularuvopas.pdfIn PDF document text
    • https://cdn.sqhk.co/mukibusu/MjifDib/nagodufoxexi.pdfIn PDF document text
    • https://cdn.sqhk.co/xibidodoko/OjeU0Vr/5553522692.pdfIn PDF document text
    • http://sportita.fun/77240105287fxjol.pdfIn PDF document text
    • http://fofiwafajelerax.sportsontheweb.net/bosch_nexxt_500_series_dryer_disassembly.pdfIn PDF document text
    • http://bitjoms.xyz/tozolofuriwulekeo8hlv.pdfIn PDF document text
    • http://wwnews.site/acer_laptop_charger_price_in_qatarufk2s.pdfIn PDF document text
    • http://evakuator-uga.ru/40832071262534p8.pdfIn PDF document text
    • https://romagazep.weebly.com/uploads/1/3/4/7/134759296/tosawalotekad.pdfIn PDF document text
    • https://jimekomu.weebly.com/uploads/1/3/1/4/131453536/51b6ff4b032e.pdfIn PDF document text
    • https://cdn.sqhk.co/wisivelu/aLTtRtN/91544095147.pdfIn PDF document text
    • http://prizinsta24.space/assessment_for_borderline_personality_disorderweowz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/49729098363.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/agilent_34461a_digital_multimeter_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/what_does_piebald_dachshund_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/e_aadhar_card_online_without_otp.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC484 4596 bytes
SHA-256: 388fe235ca68ce11ad2535b53300ebf71800af97a05869b617401a63c454b8bd
font_01_sfnt_off0000d410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD410 10348 bytes
SHA-256: b63a1f2bf650bd5bd7f16c88952fde5479e165ecd5554ceacdad8db28d3cc588
font_02_sfnt_off0000f728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF728 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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