Malicious PDF — malware analysis report

Static analysis result for SHA-256 d619958d6f9e594b…

MALICIOUS

PDF

73.9 KB Created: 2021-01-25 21:41:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: eb45c6289d90acab8ddae0e940eff29a SHA-1: 920974a4f18beb644437582174a1ca9fe5c89683 SHA-256: d619958d6f9e594bec50a066899c6373aac04a0fe61b8837ef839ee7f0021003
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains heuristics indicating it's a phishing lure, specifically using an image to redirect users to an external URL. The ML classifier and ClamAV detection strongly support a malicious classification. The embedded URL is likely part of a phishing campaign to trick users into visiting a malicious site.

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://traffnew.ru/aws?utm_term=potential+transformer+standard+ratings PDF link annotation
    • https://cdn.sqhk.co/bumogebiz/jiRohdC/no_crop_story.pdfIn PDF document text
    • http://mpvideo.org/vexorevegoy77a.pdfIn PDF document text
    • https://cdn.sqhk.co/nezazexador/icZepAp/1537918998.pdfIn PDF document text
    • http://tazogupiwelul.iblogger.org/arteriovenous_malformation_of_the_uterus_and_pelvis.pdfIn PDF document text
    • https://cdn.sqhk.co/nevawanipo/Qgehbic/pandemic_unemployment_running_out.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375509/normal_5ff7845766e9f.pdfIn PDF document text
    • https://cdn.sqhk.co/rilowikapaz/jhjifhd/tadob.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/fnghgdg/jurassic_park_island_survival_game_instructions.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvidomanale/ibhejbU/luna_fate_mod_apk_diamond.pdfIn PDF document text
    • https://cdn.sqhk.co/bozawenibiwa/71qoJgc/best_animated_movies_list_wikipedia.pdfIn PDF document text
    • https://cdn.sqhk.co/tivomepu/ykjjAZh/jefemova.pdfIn PDF document text
    • https://cdn.sqhk.co/navuwamas/jgejehh/vajorakiwere.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418987/normal_5fccf974231ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411245/normal_5ff6530f10c86.pdfIn PDF document text
    • https://cdn.sqhk.co/wokowuvawuz/j09gegc/ant_killer_terro_home_depot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sibovup.epizy.com/gevajuporero.pdfIn PDF document text
    • http://kujujigufa.epizy.com/fanasuzugibe.pdfIn PDF document text
    • http://winivufada.epizy.com/cute_powerpoint_template_design_free.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE323 5228 bytes
SHA-256: 4ef02d827f4d3c93983bd142b2ea2545472cfd84993d4a52c6988a800633ad56
font_01_sfnt_off0000f4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D6 11004 bytes
SHA-256: f84bbf51721842019f2fe7466308671a785f32b2a56308ce0d30e7568482f463

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