Malicious PDF — malware analysis report

Static analysis result for SHA-256 30cae042c2981681…

MALICIOUS

PDF

179.5 KB Created: 2021-03-25 05:14:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2ba27ecb6062371c017d9c120e0bb12b SHA-1: ba7a489994d56dbfbddd19bf74e4b7eb07a8c50e SHA-256: 30cae042c2981681f3173374c826905408b12a3d8fdc942f3d0b092fdad99bd6
136 Risk Score

Malware Insights

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

The PDF document contains an embedded URI and an image lure that redirects to a phishing website. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://resalured.ru/strik?utm_term=are+nail+shops+open+on+sundays PDF link annotation
    • http://naxovigemelewe.iblogger.org/roginakav.pdfIn PDF document text
    • http://zuzimosutikume.22web.org/95103443165.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402519/normal_5fff5bc6dc790.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407989/normal_5ff8ee84b4645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380854/normal_6056f0c399afd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470689/normal_605233ef7e5c8.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://2521c3e2-5736-45bb-9381-71005f2ffa37.filesusr.com/ugd/c85705_b5c20c9ade38474bab6030e50fc035b8.pdf?index=trueIn PDF document text
    • http://semerobaragizeg.epizy.com/walt_whitman_preface_to_leaves_of_grass.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/envato_market_free_website_templates.pdfIn PDF document text
    • https://ff4d9611-e7ea-45f2-85d3-f0b464ef817f.filesusr.com/ugd/48f461_938f8daf7a4144778da6d236cbe00bbf.pdf?index=trueIn PDF document text
    • https://f55c6975-0091-4942-a106-dc80285e5f9d.filesusr.com/ugd/8a4248_2dd92c5f7426439094f68a7cf269fd8b.pdf?index=trueIn PDF document text
    • http://tosogaxaf.rf.gd/42576015985.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/dulodegutupeziwoken.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/biryani_images_free.pdfIn PDF document text
    • http://gubogur.rf.gd/shark_euro_pro_x_998a_sewing_machine_manual.pdfIn PDF document text
    • https://4b67404f-136a-46a0-9cf3-151f2d38faab.filesusr.com/ugd/241fd5_c10f0e30abf24c49886462bcc0345748.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/molapafijufasofedokibokin.pdfIn PDF document text
    • http://merojupamen.epizy.com/fikuf.pdfIn PDF document text
    • https://b6f97e74-198a-461d-a312-d71b9712332b.filesusr.com/ugd/a2d007_d073cb5d4ec3453fab78d2ebbff2d356.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bakoloj/filubevepilabifim.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000103cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x103CB 126724 bytes
SHA-256: e2562300861bc1fbc851466624cf02eefa265b8fc70534e4d2831eb658a841c6
font_01_sfnt_off00027b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27B18 4940 bytes
SHA-256: 76acb9b8283d45f6d2835c5beaff02e5c2565e3b45d1aab85ed1b0cb07fbfc7f
font_02_sfnt_off00028bcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28BCB 11352 bytes
SHA-256: 132c3030787c46175ce78cc276bec1ac5a2b89e46cc2e30d30c0e48766f8ef31
font_03_sfnt_off0002b24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B24C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361