Malicious PDF — malware analysis report

Static analysis result for SHA-256 9349130a1f7e1443…

MALICIOUS

PDF

107.3 KB Created: 2020-10-26 18:20:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ce29b0c27b847f3d435917dce3164887 SHA-1: 1cbf5dbe0969b53484b2bc7033ca54389a22fcf4 SHA-256: 9349130a1f7e14430ca4ba2481758a0b76305396c9de7c3bce3f3e94b53be0d2
232 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, appears to contain a lure related to 'Binary domain ps3 trophy guide' and includes the malicious URL. The presence of a link farm and the ML classifier's high confidence score further support malicious intent. The document also attempts to trick the user into copying and pasting content into a shell, indicating a potential execution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 7

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=binary+domain+ps3+trophy+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371543/normal_5f905b1d84eed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372740/normal_5f8d66cc7eb9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377931/normal_5f9232e4c77b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369334/normal_5f95e7ff08bb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f86f8787cb94.pdfIn PDF document text
    • https://sijoxedewi.weebly.com/uploads/1/3/4/3/134346210/mujar.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/4518447.pdfIn PDF document text
    • https://guzebiba.weebly.com/uploads/1/3/4/3/134368687/6239010.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/8af89563c3c02b.pdfIn PDF document text
    • https://kakakirikixego.weebly.com/uploads/1/3/4/3/134318951/c3602a6c.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/dbf4f719-c29e-40f3-bbec-75b0fc14e94e/28617250363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38814460-0d5b-452c-a6bf-86b441ac7084/e46_parts_diagrams.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7060c16-e4a2-47d8-b07c-1b721125e982/mipuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a644d429-ff82-4fe6-8e62-51b27c82348a/sinifezilopuvaxodifapo.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/tikekaf.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/zidupusudipotisizi.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/o_reilly_python_5th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cac8579b-43df-4cd3-abbe-68fc92d16b4b/fesowinolufegunogukazepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e1fbe1-8929-4e32-a747-61ee19c79606/pigabelema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b35bf214-aed8-46dd-8b3a-767ffe7438f8/86719174889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dabd0454-ae4a-4d9a-b339-960b46959419/nubagetukesigavejugobixad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c4e332d-35a5-422a-925d-9c3d5e4c7910/57470816128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e4dd9e-d416-48c2-a26c-93d55006d18e/3555758897.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6de5aa06-8ee8-46c7-be1b-6d1d39e19c23/gelurarut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e5d4885-83c0-448e-8935-ded350782ab0/58822057898.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_off0001667b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1667B 5656 bytes
SHA-256: df6488df8b058c99765b369144a75cf950eb01d1a487e859d3baf8388087744d
font_01_sfnt_off0001798a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1798A 10916 bytes
SHA-256: 71ad4062a77e1511ae6fb536625a69ac1ba48ae3eadf191992d69c78a24a73ae

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