Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a8b6ab9d1bb969c…

MALICIOUS

PDF

107.1 KB Created: 2021-02-03 21:02:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 12575bfd4d6c2280a3e1c2ceb8ab53e1 SHA-1: 235f09f3de98d4758be8ddb31e2163d7f606c9ee SHA-256: 6a8b6ab9d1bb969ca014d8c763b1530c8b0a096850b2a0018770a184005c6914
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by both ML classification and ClamAV, with the latter identifying it as a phishing trojan. The document contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest a phishing attempt designed to exploit user curiosity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/123?utm_term=convergent+and+divergent+evolution+definition PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368496/normal_5fe16a61de83c.pdfIn PDF document text
    • http://naderuromopuru.22web.org/bugebazexurotur.pdfIn PDF document text
    • https://cdn.sqhk.co/xubenijevewe/Mggig69/19684772491.pdfIn PDF document text
    • https://cdn.sqhk.co/vixuwegijelo/jhijNia/10_interesting_facts_about_earth_s_mantle.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451940/normal_5ff82ccfc0a3e.pdfIn PDF document text
    • http://danivufulof.iblogger.org/1158857007.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fefadipif.rf.gd/gojunuwenakix.pdfIn PDF document text
    • http://gewumene.epizy.com/48265573262.pdfIn PDF document text
    • http://fekobovovexi.epizy.com/anand_kumar_kbc_full_episode.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/zawojupofex.pdfIn PDF document text
    • http://fereralud.epizy.com/nabexalas.pdfIn PDF document text
    • http://xivutunitilema.epizy.com/bebizi.pdfIn PDF document text
    • http://mizozibobekujul.rf.gd/conventional_non_occupant_co_borrower_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/widujinofelasik.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/nuvelanadabipe.pdfIn PDF document text
    • http://naxokagad.epizy.com/58884719969.pdfIn PDF document text
    • http://vomifavub.epizy.com/alkane_and_alkene_worksheet.pdfIn PDF document text
    • http://xefejada.epizy.com/dhl_shipment_airway_bill.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/physical_and_chemical_properties_worksheet_middle_school.pdfIn PDF document text
    • http://sirilamezowi.epizy.com/english_synonyms_with_examples.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_off00016558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16558 4864 bytes
SHA-256: 28ca0f30df878f30ca5e443382ac82981890ea36d98f01b6a794dd7a672fe649
font_01_sfnt_off000175fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x175FB 13080 bytes
SHA-256: 344cb9bed075a1aa90bdb78b162e1304c230d19308f4ae090cb916b3ba61b09d

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