Malicious PDF — malware analysis report

Static analysis result for SHA-256 33cccd09bf833e33…

MALICIOUS

PDF

67.5 KB Created: 2021-02-18 19:45:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 80cc63d3ec9fbc2bcaf81ecbe7db8961 SHA-1: d394c14c8a95bbc94ab4a3fea4c56b67b0f82cee SHA-256: 33cccd09bf833e33a1b7d795716d76701b5a147f59a7667f2204925bf13fd58a
136 Risk Score

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
  • 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://maypoin.ru/wix?keyword=toefl+official+guide+fifth+edition PDF link annotation
    • https://cdn.sqhk.co/leburogutu/hbhjpjh/luwosoragunam.pdfIn PDF document text
    • https://cdn.sqhk.co/sepokafaru/dm9hhSA/2878035515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393180/normal_5fd960db45357.pdfIn PDF document text
    • https://cdn.sqhk.co/wumigapinido/9wgehgh/favigizadiruvotafelugaxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466398/normal_6017b4cf60619.pdfIn PDF document text
    • http://dogopanasukodum.22web.org/best_blockchain_tutorial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417830/normal_600bf49938df1.pdfIn PDF document text
    • https://cdn.sqhk.co/bunewonu/gdCiegh/nfl_tv_schedule_sunday_sept_15.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/geiiYii/mobile_recharge_bill_payment_mobile_recharge_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489843/normal_600d589219c2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470678/normal_601ce8e9d695c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_602e99566ece2.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwebobit/z0jjuif/39555338326.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/iccZShi/piano_tiles_online_free_unblocked.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/banula/dividends_in_arrears_balance_sheet.pdfIn PDF document text
    • http://malinaliwul.epizy.com/50041370712.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/aha_endocarditis_guidelines_2017.pdfIn PDF document text
    • http://pugagewuda.rf.gd/wifedepovef.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_off0000c9d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D0 4956 bytes
SHA-256: 3275173993e7bb86aa35886a6f61616df393069b4e77e848e43384de6b3b0cbf
font_01_sfnt_off0000daae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAE 10732 bytes
SHA-256: 5aacba7f47bfdde965f059624e3d662ca1af951db505d9e223de2cd1666f59b1