Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b1864544697da4…

MALICIOUS

PDF

35.5 KB Created: 2020-10-05 08:22:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: bd0845db0b90537be6ecbffe4e94afa3 SHA-1: 6346593cf6cb8b6fbda6fd564a12419bf9c10cda SHA-256: 97b1864544697da4eea5d6e06bb39d95101da93204b18e2132b81545f529b336
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by a machine learning classifier and contains numerous embedded links. Several of these links point to known malicious redirector infrastructure or are part of a link farm designed to direct users to potentially harmful content. The document body, though heavily obfuscated, contains URLs that are likely intended to deceive users into clicking them.

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.club/pify?keyword=enchantment+guy+kawasaki+pdf In PDF document text
    • http://mexoxafot.sfns.on.ca/uploads/1/3/0/8/130813934/2709727.pdfIn PDF document text
    • http://files.mhorakphotography.com/uploads/1/3/1/4/131410479/webedeniwapim_ravavofov_xefidawajaz.pdfIn PDF document text
    • http://files.perfectbreakcaravans.com/uploads/1/3/2/6/132681617/1422754.pdfIn PDF document text
    • http://files.srfm.church/uploads/1/3/1/6/131606844/jubetufodozok.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/7f278269-8d4e-401e-aa53-b3328a7da3b3/jaxigunuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/054d6f76-3505-4434-8b1d-c8e3b452ac3e/dizininumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78ccddc9-fdbb-4583-b66b-7eaafda451be/vutotufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04d3e2a7-5500-4562-80bf-9916ceafb623/sudeledexefusuroganexe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0496b0b5-abd1-4ecd-88d0-b07bf57bae6e/rogunutujemu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07cbc922-671f-4f6a-a3cf-e040cdba20b3/sufomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42c260dc-68ab-4e2b-9c65-05cb1a51da92/lizajisuxepenatijum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3065218-0c5a-4e21-8727-63588fcffb1e/zelinijetagukiraseb.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_off00004d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D5D 5656 bytes
SHA-256: 1fbdec83f55a920c4eebe46db905645723640d3d7a6023c05c24c379250fee2e
font_01_sfnt_off000060a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A2 9680 bytes
SHA-256: 523534faa46db7dc5559ad7ee0706a8e5cdbbf6b2351160560588685f41f3b31

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