Malicious PDF — malware analysis report

Static analysis result for SHA-256 43b6c2786f386311…

MALICIOUS

PDF

79.0 KB Created: 2021-03-25 17:29:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: e07e0925bb194fabeb76238938e33389 SHA-1: ac42357b25e88c5cae38ea383390eddadb8a2281 SHA-256: 43b6c2786f386311a6dfc89fef92625adc603520356e85197d27478457853ea5
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic indicating it's a phishing lure using an image to redirect to an external URL. The primary malicious URL identified is fokemale.ru. While no scripts were explicitly extracted, the PDF structure and the nature of the redirect suggest a phishing attempt to lure users to a compromised website.

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
  • 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://fokemale.ru/wix?keyword=ragtime+gal+frog PDF link annotation
    • https://cdn.sqhk.co/ninulekuto/jaig9jf/create_a_todo_list_app_javascript.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/IijfQzv/89517762386.pdfIn PDF document text
    • https://cdn.sqhk.co/gijesali/bWLgfii/80061547190.pdfIn PDF document text
    • https://cdn.sqhk.co/gusisitixinu/hmPWtCP/tiktok_downloader_firefox.pdfIn PDF document text
    • https://cdn.sqhk.co/lanumakefu/ehb9ije/lumaxisabene.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/fgj0QvR/mesozo.pdfIn PDF document text
    • https://cdn.sqhk.co/gitaligido/bIHhigd/84163816456.pdfIn PDF document text
    • https://cdn.sqhk.co/lidojuxuxiro/xxjcTja/39724653088.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/xunilukegez/lusimagadivudez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f050161-e453-4011-973c-f620a0d8fa88/7033935811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e047ebc-58f2-46a2-88e7-c4bbb8407d38/amazon_kindle_paperwhite_4_update.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cc2a686-1eef-42c7-88c3-73aaec17c61e/what_is_the_structure_of_a_specific_academic_text.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/84717555331.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/713df266-cff8-4df3-bc38-cdcc5f80b099/sodastream_refill_price_target.pdfIn PDF document text
    • http://jijalikutigo.epizy.com/15386772599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48ac0869-b8c3-48cd-8aaf-65377031460c/31787540036.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/82255556064.pdfIn PDF document text
    • http://sopigovo.rf.gd/99584738056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26969ab3-6d24-4e61-a24a-b2930fb24c7d/how_to_get_rid_of_acne_scar_fast.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/xisofag.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_off0000f7bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BB 4916 bytes
SHA-256: 9010c0c446f5c98f1b6296dcdcb25b35a8b33bdd031d24fa449a940904f491ea
font_01_sfnt_off0001086d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1086D 11436 bytes
SHA-256: 84d7892d3aa7f4d76f21106a8f233447c6cf404ba4cc72dd9f6b9e13f445313d

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