Malicious PDF — malware analysis report

Static analysis result for SHA-256 946ab6ea31393ba2…

MALICIOUS

PDF

36.2 KB Created: 2020-11-04 23:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: dba913d43b34c7e41b62332ca151f4cc SHA-1: 1dc5266c1f21c41daa9e5a8a3390861880898c92 SHA-256: 946ab6ea31393ba278ed54777df7e3ea24d7b383f813a369fe5fcf695ae18cbf
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 pointing to 'https://ttraff.club/123?keyword=rotmg+private+server+link'. The document body, though heavily obfuscated, contains references to this URL and appears to be a lure for users seeking game-related content. The PDF is also flagged as a link farm on disposable hosting, further indicating malicious intent.

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=rotmg+private+server+link In PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/d5c5c5bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f8756665d6f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_5f91e1ed5674d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445334/normal_5f9f63ec69a1c.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/rijavo.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/a73cbec3e716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382793/normal_5f8d2eccc7bbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446921/normal_5f9dc72f93eb7.pdfIn PDF document text
    • https://mulodunewumil.weebly.com/uploads/1/3/4/3/134314444/xazexojimuti-jarofafa-gazaruta.pdfIn PDF document text
    • https://zavamemedu.weebly.com/uploads/1/3/4/3/134305249/88aae2e905.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/150e0180-55b7-453b-b456-886af690def7/shinestar_sata_4_port_card_drivers_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/rimovinukojagib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdf7dad5-43f2-4bad-abe6-320b4266063b/74619913966.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07d24d9e-0f53-4bd2-ad98-7b9af6684f0e/30956396911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b130170-91d4-4ad7-8156-9f26ad55a4fd/54678021971.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e90563ed-2cdb-41be-85e9-14aa8f794348/nojudasoxe.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_off00004f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F4E 5268 bytes
SHA-256: 43ef0463af07d6da8d7ce66d17ad77a03b54552bf5e453a3eab72e82e15c3a6d
font_01_sfnt_off00006133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6133 10232 bytes
SHA-256: 6cca28e0350e80fb54c429af7659f05c5c6a9a4d413fdbf33c2dc42d00f62965

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