Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d70086eb1fd8060…

MALICIOUS

PDF

72.9 KB Created: 2021-02-26 04:35:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 419e6c7f778b626c7ae86bd6d4dfd9be SHA-1: c7b639579502d55f4a49ea06ef2cb626dfa35e84 SHA-256: 4d70086eb1fd8060f370972c70838eedc4ee5e8acd5b85ad550a10ee6c4c66c2
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/award?keyword=entry+level+mechanical+engineering+jobs+memphis+tn PDF link annotation
    • http://trellos.fun/i-flashdevice_hd_softwarexz75q.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/rWha2Ts/army_toys_town.pdfIn PDF document text
    • http://trokot-newshop.online/listening_skills_worksheets_for_grade_2klr27.pdfIn PDF document text
    • https://cdn.sqhk.co/gunakawujo/XNjcieT/15229390764.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/cgdHxhc/mabeki.pdfIn PDF document text
    • http://samo-katim.ru/telofusubogexalz2mwd.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/hdaXIhj/sawaminiresoku.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/ggn2idN/43524151122.pdfIn PDF document text
    • https://cdn.sqhk.co/tixunadegu/iakhcTA/89428379648.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/icidohb/koduwabafimebomisusejewod.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/gc4ighb/wisugutosifadimizolegi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465938/normal_5ffa9ee509206.pdfIn PDF document text
    • https://cdn.sqhk.co/deloreba/xEUUhic/xosutalumetosadizob.pdfIn PDF document text
    • http://braco.ru/nilivax6y5yr.pdfIn PDF document text
    • http://fruitik.space/pifituzafute1vcjs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF57 5680 bytes
SHA-256: 521a52e0e286414f2ee99603385fc74dabd6bfb31ccc98c45384de844db1ada0
font_01_sfnt_off0000f291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF291 10572 bytes
SHA-256: fd565183856a12b3083f57459b8a497c308d7dea1640cff0488e377a4de96775