Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c1004351171ec5…

MALICIOUS

PDF

40.9 KB Created: 2020-10-28 18:32:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4677ef500243d996d5b21e94e4e3a901 SHA-1: 53b171c8fd8bd460d5dcf65b39da7cf1c993e8c2 SHA-256: 89c1004351171ec59049a8c4437175de58416fae7da5e3d68177a6ffbc576cd7
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL https://ttraff.club/123?keyword=derby+ks+community+center is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the presence of a malicious URL strongly suggest a phishing or malware delivery attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=derby+ks+community+center In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368949/normal_5f87a029c39fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384468/normal_5f95bb955b4a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381294/normal_5f8f50a45752b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f876adee0e2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380380/normal_5f94314f74607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_5f8cc714afdde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376879/normal_5f8d7b6bdb85f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407087/normal_5f925822380d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_5f890c801b2f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379236/normal_5f8c54a26a19a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f8d365206a09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367921/normal_5f8920d584940.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/89a74352-2ed6-448f-bf41-000bfc00b0e1/tudegiwomikedubigurare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50baffc1-2882-4d34-bbb5-916bbad82e0c/giza_death_star.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/hr_interview_conversation.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/kunugitigatitezusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bf3ccd1-0153-4a95-9ab2-cc56f4124925/64742478469.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/74506784740.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33b8cec4-c19c-45dd-aaf5-4190cd7272d2/heat_and_mass_transfer_fundamentals_and_applications_5th_edition_solutions_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/993eeb5a-65fe-4d09-a02a-53dd36a268f9/92198277615.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/55520008114.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51CB 4892 bytes
SHA-256: 2c01b1523b15045f95bce64b8a7ef537e52e79a4b478371a8d25365abd2887e4
font_01_sfnt_off00006267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6267 11296 bytes
SHA-256: 0014b5831e19522f2d1efb67edf4ad31b89766c038b340498972fa32f9aaf567
font_02_sfnt_off00008865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8865 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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