Malicious PDF — malware analysis report

Static analysis result for SHA-256 383e8f191018517f…

MALICIOUS

PDF

75.1 KB Created: 2021-01-06 10:09:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: da474c997d7bde6b84162f18444b8dee SHA-1: a8ed96f4134ef065c4901cdf9d2cc128a3bfc20f SHA-256: 383e8f191018517fdaee8d59a51ae4c14d81df745d172218f692ef11dd80f656
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://traffine.ru/wb?keyword=england%20top%20scorer%202010%20world%20cup In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f8f36d59f1d6.pdfIn PDF document text
    • https://cdn.sqhk.co/rurokusulos/gjhhhie/ixl_learning_app_store.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367950/normal_5f9444ea1a21b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410695/normal_5fc828fa7d440.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/kWji1ha/naxekiwijafojodoliduzo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372963/normal_5fe794ed76ae9.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/bifadiwuwileji/ppsspp_emulator_for_android_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf8b3213-57c1-4159-9c29-ae4747c2b66e/manual_for_bissell_proheat_pet.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/wimudibifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd6beb3b-8e6f-4bb3-8974-e5f0b935a845/titujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b933de-d4e1-49ca-b145-b0d99c5b0fcb/21015099826.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/72752789846.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/fapokuzarotakuniteb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/267259bf-0885-4322-b156-40e3d8740b06/25264985767.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/38988212922.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_off0000e64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64D 5616 bytes
SHA-256: fd3e6ff8e8cbfd7647eb4f6f124dba68ae18ee0158a0705dbebfa6702bced639
font_01_sfnt_off0000f996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF996 11188 bytes
SHA-256: a91204aeb69d47ccefb1540c6f6c6fa3599889295de9bdc977682e3f234e38c1