Malicious PDF — malware analysis report

Static analysis result for SHA-256 01f1e148df1b859d…

MALICIOUS

PDF

55.8 KB Created: 2020-11-03 13:49:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ef480d15cafd65d1c8a66798193082f8 SHA-1: 1d62f360e8dc3ee8848922ed3f9ad88e3890acec SHA-256: 01f1e148df1b859da2e5c2dc85575da1843b2233393a989e2ea1f4f8785a1edc
124 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The embedded URL, 'https://ttraff.club/123?keyword=monster+by+walter+dean+myers+poem', is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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 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.
  • 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/123?keyword=monster+by+walter+dean+myers+poem In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386621/normal_5f94dc6954e78.pdfIn PDF document text
    • https://nobozufale.weebly.com/uploads/1/3/4/3/134322784/8942329.pdfIn PDF document text
    • https://zavamemedu.weebly.com/uploads/1/3/4/3/134305249/91afd121f9.pdfIn PDF document text
    • https://puvujoda.weebly.com/uploads/1/3/4/3/134326666/pamidufevaniji-kipozakesetifi-gozulilejufitoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383929/normal_5f974aab1062b.pdfIn PDF document text
    • https://sebiwijojemobod.weebly.com/uploads/1/3/4/0/134097571/2269211.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/dogazisuze/z_fighting_roblox.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/487102267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7d302b9-48ed-4e3f-8a40-dcb8835322da/15328068548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/840a29bc-4338-4429-8f54-140aaa68b2fb/potitigatafopomigemuzefur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2447/2002/files/87214472174.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/rixuforubip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8904/9785/files/32731015100.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_off00009c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3D 5444 bytes
SHA-256: d39f9d1056963f5c1995161397b144086ef93e317d70e79d1728bcacd93d03a0
font_01_sfnt_off0000aec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEC3 10444 bytes
SHA-256: aa7e1c958269e5ccffb664e998854b5c6b4c7101b2703b8a7bd93e27aa5aaf81

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