Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfaf2ea05a632bd7…

MALICIOUS

PDF

63.0 KB Created: 2021-02-25 03:43:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 00b7daffd3973b7a70e23ea0643065d6 SHA-1: e3edcc6201b4ec145d755260fb1925e120cdb618 SHA-256: cfaf2ea05a632bd741564cd19a052faf80e4b67120f532c3b5a2bc6e97bd0890
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/aws?utm_term=how+much+does+it+cost+to+repair+screen+on+ipad PDF link annotation
    • http://wotidoteked.mywebcommunity.org/the_killing_joke_did_batman_kill_joker_reddit.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/bie3Xii/shotgun_sounds_for_dogs.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosewude/WPicpMD/5829387243.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418762/normal_60067bfa132a7.pdfIn PDF document text
    • https://cdn.sqhk.co/dimumaneda/awgghf9/45438494408.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485436/normal_5fdd690a15533.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486193/normal_5fc64d35c7f02.pdfIn PDF document text
    • http://zoguponuwuxoli.medianewsonline.com/the_wind_in_the_willows_1995_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/vurifozi/hojaV2x/addons_creator_for_minecraft_pe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426071/normal_5fefbc90286a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384650/normal_6009f15a73b07.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/kitakilesa/81523784183.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/catholic_saints_worksheets.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/how_to_bar_a_soldier_from_reenlistment.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/valiant_force_talent_guide.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_off0000bae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE2 5332 bytes
SHA-256: 65b926fc262aaa3a1366299590e514d3a0217337147507919e8f970a994da6b3
font_01_sfnt_off0000cce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE5 10040 bytes
SHA-256: 5ab3ea6b97c7256579858f85bcf5933210944bc94f4ac43988738722dfd89fbc