Malicious PDF — malware analysis report

Static analysis result for SHA-256 471714c95adb0bcb…

MALICIOUS

PDF

67.3 KB Created: 2020-12-10 04:16:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 58906a6e8299a968572a5bab63e11ff3 SHA-1: 7e788d8a93cf5a6f2d8ebbeed95766be0674db34 SHA-256: 471714c95adb0bcb6e5494f1614dca8fc81be5d86fe6f0e24ef09356a114beb1
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL leading to a suspicious domain. ClamAV and ML classifiers flagged this file as malicious, specifically identifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to a 'Novena rosary for the dead', suggesting a lure to disguise the malicious intent.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffe.ru/strik?utm_term=novena+rosary+for+the+dead PDF link annotation
    • https://zuwuwuxi.weebly.com/uploads/1/3/4/8/134883554/sekilogutawaforaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/resisuna/eular_guidelines_sle_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/im_yours_ukulele_tabs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce71f367451e0cec7e0a95/t/5fd184777c12252903ec1df5/1607566459125/cnc_lathe_machine_for_sale_in_pakistan.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/weduribovevasiwagezez.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/xasipurulebovene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3fffa7c-52b1-4025-a8c4-367893705e5c/jagenurija.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/chapali_height_movie.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc562177d0c8f249d5ee8a2/t/5fc7552993ad1a481219d92e/1606898987761/99378589854.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc06ef3116eb00e3c49974f/t/5fc345102dd96f591857aeb4/1606632723906/dbq_on_second_industrial_revolution.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/quiet_partner_iii.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/jekepel.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c6032e34347c70505203/t/5fc54b953c6ccf69f30d5173/1606765463080/25536938967.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc365ff104edf1d7790e6f0/t/5fc977560d07ef0edd0eb0f3/1607038808047/zalefofixuse.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB01 5096 bytes
SHA-256: f536cb6355c2ae7b8fd85188d44bb654fe8b059e892c48166f1e25817b3a310d
font_01_sfnt_off0000dc61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC61 10576 bytes
SHA-256: 1c426f521f39b3555902010c98dca03849ec4e1188e3bd2f5684689bd0e24eee

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