Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a32b9bb2a45f7c1…

MALICIOUS

PDF

47.9 KB Created: 2020-10-28 01:50:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6a3988118f2277378c6c7fb1be573909 SHA-1: 2b6e059dcf9a2acbb7db20bc44a1c5cb1da2e070 SHA-256: 7a32b9bb2a45f7c12d325acf3ee32517c142f97a82b9dcda1696476337f499b8
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.cc/123?keyword=palmetto+christian+academy+jobs', is the primary indicator of malicious intent. Although no scripts were extracted, the presence of a malicious URL within the document body suggests a phishing or malware delivery attempt.

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.cc/123?keyword=palmetto+christian+academy+jobs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369520/normal_5f92ae8dd3927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406793/normal_5f989bebe0f12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384480/normal_5f8e84afec835.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/tetazino/82934051155.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/algebra_birkhoff_maclane.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/xuzurepovorovexitatiro.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/sobafuwumusokiwopekarit.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/denexawikinusipam.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/11254036010.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/33691978069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ff470bc-2a74-4fd7-bcdd-34eb6d1c8f08/2123785806.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f22ece69-fba6-4bed-ad60-4b8259ece333/ion_block_rocker_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3654caf3-128d-4077-84cd-f2c6749d165a/gojasafotepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b867d743-79d5-40ab-be1f-64c775de5715/tugavalepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e8c4063-db88-4da0-9d8b-37fbb3c8cbd2/ruxexutadule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b65b3b78-7568-4bc7-b585-e1813c3a31c8/zamit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64686d5b-cb72-4127-9129-883ac528e456/17971825465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ed51507-6c81-467b-9818-aae2d1b1df67/1651242957.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8e8a5ef-cc17-4662-a93b-f710d865a4a6/wokak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdc14a36-8775-4438-82ae-200148d54280/26298017217.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_off000078a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A3 5496 bytes
SHA-256: 06b49749ebb94b5012667dfdb529f1e014bdd10a20935319977bd6333fe8a719
font_01_sfnt_off00008b2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2F 11628 bytes
SHA-256: 76c05e19e56c96d526bf295930d127d849794d64d2f052ba8eb3a22a196c1629

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