Malicious PDF — malware analysis report

Static analysis result for SHA-256 39d88b0835a2ce5a…

MALICIOUS

PDF

71.3 KB Created: 2021-02-15 00:09:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f5fe4e49cff9eb48b114d82f208fc31a SHA-1: 3b2c4833004cf1d7527a78926be897e76d2f4c31 SHA-256: 39d88b0835a2ce5aede7995e4f78d45bcefed2bf3194ff77cac71d1b7857dee1
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wix?keyword=square+knot+bracelet+diy PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391899/normal_6007ad7066070.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449627/normal_600bc540af008.pdfIn PDF document text
    • http://tufezoba.22web.org/bambara_kannaley_full_movie_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403118/normal_5ff61d7556240.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/iglhjge/64294443456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411231/normal_5fd6520b1a8ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392659/normal_6028027a3bf55.pdfIn PDF document text
    • http://wurogutevifo.iblogger.org/zulilidemafikuxek.pdfIn PDF document text
    • http://gotiwekiz.iblogger.org/avery_index_card_template_word.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/zalisujezajaje/boeing_737_weight_and_balance_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/whatsapp_for_pc_free_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/amanmovement_anti_ragging_form.pdfIn PDF document text
    • http://ditufadupogeju.epizy.com/rivexofutazoserate.pdfIn PDF document text
    • http://podekorutad.rf.gd/zafare.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/debate_score_sheet_for_students.pdfIn PDF document text
    • http://nifibomagogov.rf.gd/urolithiasis_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/block_ads_in_all_apps_android.pdfIn PDF document text
    • http://zenuwosa.epizy.com/ivory_billed_duck_lodge_guide_service.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/8297691948.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/27609253489.pdfIn PDF document text
    • http://sebumevavu.epizy.com/votovativilaxor.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_off0000dac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC6 5288 bytes
SHA-256: 1bfc82283307618c05a64ab7b29cb4199faad0d63096f849bce9b64ef1c43aa8
font_01_sfnt_off0000ecd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD9 10220 bytes
SHA-256: 3d1f8aa67355150eea6a65ec2ea06c5a9478fb7cc58f3153db401e09c2a202a5

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