Malicious PDF — malware analysis report

Static analysis result for SHA-256 792712b96d58a3ff…

MALICIOUS

PDF

118.3 KB Created: 2021-03-18 00:09:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 007436b02c8ad6ae0c9f0dd768fd7827 SHA-1: 8ee222865c2e70ba5ce5035fe3571362b95c86c9 SHA-256: 792712b96d58a3ff6083f44c975deac4837d28ccb28a7a62948e78fc7daa198d
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a high-severity rule for an image lure linking to an SEO redirector, and a critical ClamAV detection for a phishing trojan. The embedded URL `https://lozipotod.ru/wix?keyword=yu+jin+lee` is likely part of a phishing campaign, aiming to trick users into downloading further malicious content or providing sensitive information. No scripts were extracted, but the PDF structure and URL strongly indicate a phishing attack.

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://lozipotod.ru/wix?keyword=yu+jin+lee PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485435/normal_5fffc36f10d62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450719/normal_60029c401d5e6.pdfIn PDF document text
    • http://bitipusefotas.66ghz.com/kinasozirunogole.pdfIn PDF document text
    • https://cdn.sqhk.co/setinapas/eijhjig/bhojpuri_dj_remix_song_new.pdfIn PDF document text
    • http://raraveluwogevuw.mypressonline.com/namodolizetatuwisoduluzek.pdfIn PDF document text
    • http://xagevogewa.medianewsonline.com/41304903730.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446923/normal_5fff3f22cc9d2.pdfIn PDF document text
    • https://cdn.sqhk.co/fesakesovoka/gihhkha/45356824009.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455179/normal_5fe337e560bd8.pdfIn PDF document text
    • http://nickned.me/grocery_list_app_iphone_and_androidalffv.pdfIn PDF document text
    • https://cdn.sqhk.co/xorazasuno/irAlibA/pulse_point_codes.pdfIn PDF document text
    • http://wide-do.top/lubexepigoru50t1d.pdfIn PDF document text
    • http://bloomwithdeanna.com/48769385859wavo0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402519/normal_5fc954bedf924.pdfIn PDF document text
    • http://mamontov-net.cc/apology_letter_to_boss_templatep26zj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407084/normal_6010439ed3382.pdfIn PDF document text
    • https://cdn.sqhk.co/kufalavoxig/J9ggifY/las_vegas_tourism_august_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gabigirinekib.rf.gd/99357641547.pdfIn PDF document text
    • http://rigirulame.epizy.com/ap_transport_department_certificate_of_registration.pdfIn PDF document text
    • http://zelofamaguxedep.epizy.com/rejinilomufuzenipo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B37 7508 bytes
SHA-256: 775e626294302b595cc0426fe2cda2f0bcc502db4977614518e2d5ba236a9265
font_01_sfnt_off0001936c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1936C 4232 bytes
SHA-256: 0325991f8fb4c24288e89dd893e1a113fb89ad70e2643235147c2873a0530cad
font_02_sfnt_off0001a1e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A1E5 12468 bytes
SHA-256: 620cd191e90c1d2fe03f894c5d22139e2aa4e30a4d5bd60aef452c9a39599da6

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