Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f2bf241da05491…

MALICIOUS

PDF

48.9 KB Created: 2020-11-02 00:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bb4f1a6f1129b8d23c1ab0423d5de818 SHA-1: 230c3ec2a1c3e4323436ed9f2b53dc731c429b6a SHA-256: 32f2bf241da05491b8a4d7009b5953ef9ee45428ebedebcbdcd223fa2e0b7149
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a redirector link to 'ttraff.com'. This domain is associated with malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to disguise the malicious link as a game leveling guide. The presence of a large number of external PDF links further indicates a link farm used to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.com/pify?keyword=summoning+leveling+guide+rs3 In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/sokilijaw.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/2933876.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/pebuxoz.pdfIn PDF document text
    • https://batatifenosi.weebly.com/uploads/1/3/4/5/134513642/bezufezom-kigarod-wuvujomi-jesemex.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/pewebopufupe/argument_list_too_long_java.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/siferaxex.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/funny_fishing_photos_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/anexo_2_oaci.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9127b04e-6f2e-4738-ac9b-cda91a25cac5/nebosojojakaxigikege.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/59287268713.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/ficha_bibliografica_apa.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/81430630056.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_off00007f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F48 5264 bytes
SHA-256: 7399c490f030fed7f4cd50173420b64dc5ec57603471ebd18e512b3ded05737a
font_01_sfnt_off00009124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9124 11044 bytes
SHA-256: e6227ead339f781a85f2bd69936b293542d344c65801b8c959568e8c1e803d3e

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