Malicious PDF — malware analysis report

Static analysis result for SHA-256 515de04f6b93b975…

MALICIOUS

PDF

71.1 KB Created: 2020-12-01 12:42:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 823cf00c1168b77d79a2b5584d8ae3fe SHA-1: 7ce5df45c925b6ff48c08b2e13ede98cc745eb3b SHA-256: 515de04f6b93b975e029377949cf250ea5deba7a375c24003c313f961b5a5ae3
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics indicate it uses an image lure with a redirector URL, likely for a phishing or scam campaign. Although no scripts were extracted, the PDF structure and embedded URLs suggest it is designed to lead the user to a malicious site.

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://trafffi.ru/strik?utm_term=flagler+county+clerk+of+court+fl PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415531/normal_5fc253ab96531.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389387/normal_5f9a8f869ca44.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://uploads.strikinglycdn.com/files/f7b60e46-8e80-4477-846c-49c2e3e4bc9f/97560480168.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4a28139af037644e7e6/t/5fc36149145a8629dc1bd4ba/1606639946761/43939892742.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87bbcf09-f3e3-4296-a5a6-5da61d4ed9b4/tepc_5200_assessment_1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eda3ec917750a3d80aaa/t/5fc53cc33485235c86713761/1606761669291/92765561565.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a6975c2-0af5-4ff3-8b9a-ed28ebd59138/84619199086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95c21f06-8f1c-443e-b095-0dbd11c9cba2/que_j_ai_ou_que_j_aie.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/wasatakigezozeb.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf61e23570fb44d1fa7d79/1606377959196/giwibubejudavoxuvosotet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c07c5c74-444e-47e4-bfda-31f29ecbea4c/susedemalipuvem.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1ceb7bdb33045eec8b031/t/5fc36c46e18c5c478e67490f/1606642758895/official_invitation_letter_for_education.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd37d48d2c222540361c44/1606236116777/digelalodijixonij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb263053-b683-43c7-bbca-9238989d5d26/75011018.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 2

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_off0000cb95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB95 4828 bytes
SHA-256: 88fa13886402ae5d21c17937193ebeee0e42f1249bb7af1db93176604031265d
font_01_sfnt_off0000dc1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1D 10924 bytes
SHA-256: 608e2eb074ca2d7d9fe06e7a5bec5aa606b940ffcef67bb7d4eed2e871382998
font_02_sfnt_off0001013b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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