Malicious PDF — malware analysis report

Static analysis result for SHA-256 c628d19ad7192132…

MALICIOUS

PDF

58.2 KB Created: 2020-11-01 22:05:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fb436e07db42a6b425661d4cddf721f1 SHA-1: 90ff23dd16b0f8eadb1d4eb0c392fadc6f1ec6f0 SHA-256: c628d19ad7192132833e8a40b0a6679396fff332eb249c77a0398eadc2b46878
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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=milady+s+standard+professional+barbering+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377938/normal_5f8b860057e58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410976/normal_5f9efb6269beb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373768/normal_5f9c512e57b94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374984/normal_5f926000c09f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_5f8dcc643b551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368266/normal_5f906471b610c.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/6df8a5de-5bc3-4ebc-8824-71b083f3158c/xanorulebejosapebito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7d98ee9-95ab-474f-bc90-23cd3c9ecfe2/23975647382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac865911-679e-49ed-bb3c-595027daa937/great_dane_rescue_inverness_florida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7163377-2064-4962-a9cc-fd0beefd6ec1/68884428291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7134/files/capponi_psicopatologia_semiologia_psiquiatrica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb235c0e-90e0-4007-b2b9-f517d3a943a6/sw_jedi_fallen_order_double_jump.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A33 13184 bytes
SHA-256: 4822087755a973476e265a8d1805bb21e7b5648acfe872101f8a8bfb1efcd28f
font_01_sfnt_off000094b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B7 5244 bytes
SHA-256: 1d9060fc021f5b39500bcb066031169757c8a5d652faec32f52b84c95a561fb2
font_02_sfnt_off0000a69d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA69D 10468 bytes
SHA-256: 5d28c1d1f3a4afb71ee21df555d0826c92868e661fc7c1b3d542d15d46ed31f6
font_03_sfnt_off0000ca7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA7F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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