Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70dd74b88e153d8…

MALICIOUS

PDF

73.0 KB Created: 2020-11-18 11:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1686aec6c1aee57e70a21236ece2d0d4 SHA-1: 9b5aa55630b5f28717571f455aa756dc2f1c2975 SHA-256: e70dd74b88e153d85451b933d889c8a9e4c51e91286deba96ff1fd918470e5a6
126 Risk Score

Malware Insights

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

This PDF document is classified as malicious and exhibits characteristics of a phishing lure. It contains multiple embedded URLs, including one pointing to 'trafftec.ru', which is likely intended to redirect users to download the advertised 'minecraft pe download apk free 0.16.0'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for such lures, further supporting the phishing intent. No scripts were extracted, but the presence of external URIs and the ML classification strongly suggest a malicious intent to trick users into downloading unwanted software.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafftec.ru/123?utm_term=minecraft+pe+download+apk+free+0.16.0 PDF link annotation
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/6835850.pdfIn PDF document text
    • https://vosomomoratefuf.weebly.com/uploads/1/3/4/6/134614816/vupakovone-vabezob-viwito.pdfIn PDF document text
    • https://zinawadasug.weebly.com/uploads/1/3/4/3/134312837/04fa4ad0b4.pdfIn PDF document text
    • https://roninuvanajeg.weebly.com/uploads/1/3/1/3/131379749/suwijetimizu.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/5ea28b89e4.pdfIn PDF document text
    • https://zeteparikimifol.weebly.com/uploads/1/3/1/6/131637109/zupaf.pdfIn PDF document text
    • https://puliwavigajog.weebly.com/uploads/1/3/4/4/134469254/sexemezog.pdfIn PDF document text
    • https://jopovasido.weebly.com/uploads/1/3/4/6/134619877/zodufizizon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bffd4a2d-d863-4cdc-ba21-1e84872763f2/53664103324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a551426c-46ad-461f-8827-8cb16319ae61/xizuvesoruwivopajojab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aa792d4-9f3a-44fd-a3c1-827b9e528519/70881580950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8e96b43-aae4-493d-85c4-dd4de07f40eb/nokodeduzevagev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b68cbe02-301d-4c05-8ed9-bf3092f0fc70/bosovutugevajeva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48c1c6e9-cf34-4fca-97b1-7f0d9d7f0412/carquest_85061_oil_filter_fits_what.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89a79586-0194-48bd-9be7-5d789f5a9b05/26388100848.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC811 5512 bytes
SHA-256: 535b7f309692d49dae7330891b2ed3cf22eed602fce1cc65b12242f68539ab4f
font_01_sfnt_off0000db08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB08 12024 bytes
SHA-256: 2d405e50b74e363c206e880d82323c5bf0e5831193a84fb4c14ef83f77ee7b29
font_02_sfnt_off0001022d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022D 16084 bytes
SHA-256: d21a7fc198e2dbcb9b040cb75dab8cf98619bf1634d79e1d2b6cd60f14bc1e82

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