Malicious PDF — malware analysis report

Static analysis result for SHA-256 3372619c960dedae…

MALICIOUS

PDF

97.4 KB Created: 2020-11-16 12:51:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2fcc70d6c3667ab09157ccafe061a8bf SHA-1: ecb03ccb2c808a58e4f954a029e8ef68cf72d7a6 SHA-256: 3372619c960dedae885a3d25e77267a7f588927d0d465e3e200b472e1222b710
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 identified as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The document body, though heavily obfuscated, suggests a lure related to a 'Sea scout manual 2016'. The presence of an external URI and a high-severity heuristic for a redirector link points to an attack pattern involving luring users to a malicious site for further compromise. No scripts were extracted, but the PDF structure itself facilitated the malicious redirection.

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://trafficel.ru/123?utm_term=sea+scout+manual+2016 PDF link annotation
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/xawixaravoniv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f89647c5c5fa.pdfIn PDF document text
    • https://mufebukevep.weebly.com/uploads/1/3/4/0/134096334/c3909aea7410c.pdfIn PDF document text
    • https://dubuzosokiboxof.weebly.com/uploads/1/3/1/1/131163723/fazokufujin_bimani_sodogi.pdfIn PDF document text
    • https://nonesuwenuvav.weebly.com/uploads/1/3/4/4/134400251/4527227381d41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388162/normal_5f95ff08db6fa.pdfIn PDF document text
    • http://www.opentle.orgIn 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/6afa4ec4-2f1e-405d-b8f2-5f3d43f2d1f8/kugojexajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5b90fe1-5c31-4d6e-a0f4-4e8a338d1fb5/miata_steering_wheel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0c9613f-680f-4c77-9da7-d8865ca885e7/the_mission_of_god_christopher_wright.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/cerebro_humano_e_suas_funes.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/81304728525.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://www.gnu.org/licenses/gpl.htmlIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00011be0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11BE0 14544 bytes
SHA-256: addbd44af76f39f706e333d3b5e6d82538bbedb4baf83a70100be3f4994ee42c
font_00_sfnt_off00010a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1F 5264 bytes
SHA-256: 3204a01d26c69b8e8cc007fe12a2e77d57a77d15b6249421d9bfdebdc4ded6e5
font_02_sfnt_off00014514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14514 11056 bytes
SHA-256: 7695979b779e6e5b5536206b8bff1ccdb490bf2f19f088691d4a8cbf56c2028e
font_03_sfnt_off00016abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16ABB 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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