Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb4ef3825cb40e0…

MALICIOUS

PDF

71.4 KB Created: 2021-02-13 09:02:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 52b471cd8d54790367799bf542d8dfdf SHA-1: df1be5e3b7f5ee1c01c6ef702c8b0dadf6b85741 SHA-256: 7bb4ef3825cb40e06d037aa665f525aa2c4d78669815025fb5167017d3b4dbfd
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=the+lorax+comprehension+questions+answers In PDF document text
    • http://salukapebuke.iblogger.org/capital_market_theory.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459177/normal_60157feaf2e38.pdfIn PDF document text
    • http://fulusixavopowem.iblogger.org/lalamip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dulaxidej.epizy.com/ct_scan_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/valiant_force_shizu_guide.pdfIn PDF document text
    • http://wefukuw.epizy.com/84439076707.pdfIn PDF document text
    • http://mirokuf.rf.gd/momalekomevigoberebiniwuf.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/zesorifotibuzin.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/99754481790.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/10643822406.pdfIn PDF document text
    • http://pevidevile.epizy.com/hangout_app_for_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/babybjorn_bouncer_manual.pdfIn PDF document text
    • http://nawulariwataxut.rf.gd/metal_bluster_2_game_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/poraradex.pdfIn PDF document text
    • http://fidosofesus.rf.gd/assessor_report_d_of_e.pdfIn PDF document text
    • http://lowazuxakosilal.epizy.com/lifusegik.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_off0000da52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA52 5408 bytes
SHA-256: c38f1ab100b4c2b7a5c57c6a793419ec1d1152a32dea09619765ae97ba6e9eff
font_01_sfnt_off0000eca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA3 10592 bytes
SHA-256: a8423787d8b741174b20803cc2e800def97834816658a81cb7f437a24756cce0