Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba0d6b74b6570a4…

MALICIOUS

PDF

74.6 KB Created: 2021-04-06 11:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: c4adf81795e25455fd373e748650305e SHA-1: cab3a07a771558a18377fa7999532ab608d3e3ad SHA-256: eba0d6b74b6570a461096dfcc69ac454052411812f43ac60efec5fbe2c140267
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a high-severity rule indicating an image lure linking to an SEO redirector for free-download phishing. The ML classifier and ClamAV also strongly indicated maliciousness. The primary IOC is the redirector URL, which likely leads to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wix?keyword=roller+coaster+physics+gizmo+answers PDF link annotation
    • http://curvepreloved.com/36620136391soyfl.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/BCrI1hg/jekeputikawanib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467004/normal_60446e21626f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407989/normal_5fedad52df12a.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/gjwzr0O/foviwopilogifap.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/dkjfQWp/27992022074.pdfIn PDF document text
    • https://cdn.sqhk.co/toriwogadej/Ng5icgf/1211199629.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486045/normal_5fd919548fea6.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/bhgeKhc/79782867395.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/VjiRFif/personal_assistant_resume_summary_samples.pdfIn PDF document text
    • https://cdn.sqhk.co/pumafuki/gi2gdxS/72149024594.pdfIn PDF document text
    • http://dkblogin-de.best/270466234504xn1n.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/cihjeT1/hidden_object_games_for_free_android.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/ghjhgAK/free_stuff_to_do_in_brooklyn_ny.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/ZicZigo/dakaxasad.pdfIn PDF document text
    • https://cdn.sqhk.co/sozodumupof/gd6bhjh/34486197931.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421205/normal_600d987652e3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495531/normal_5ffe501e04181.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/LdlghDd/tagizov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/dr_seuss_beginner_book_video_how_the_grinch_stole_christmas.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/nowibexamonas.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 4

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_off0000d6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C4 5388 bytes
SHA-256: 99d48251e89577ffe8e7aa2d9b2a09f5bb45b68088127c837afd52a69e43faee
font_01_sfnt_off0000e905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE905 10504 bytes
SHA-256: 3651702b8a3ad737616b2fb1fc6abfa3dbd9d54645b4c05c957af8326e0c2b5e
font_02_sfnt_off00010cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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