Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4b13db2bd7d1a7…

MALICIOUS

PDF

38.6 KB Created: 2020-10-30 11:35:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: da44e5203b21f686d38dea90ee17b240 SHA-1: aef10f4abf5572f04350abedb512ea9cc9862191 SHA-256: 3e4b13db2bd7d1a7da5f975836657ca616eaf709dc110b3c2c4f9547085e3d1a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, with a primary link to 'ttraff.link' which is flagged as malicious redirector infrastructure. The document body text, though heavily obfuscated, contains the same URL, suggesting a deliberate attempt to direct users to potentially harmful sites. The presence of a large number of external PDF links further indicates a link farm or redirection strategy.

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 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.
  • 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.link/pify?keyword=ge+advantium+microwave+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f8d73b42e6ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382196/normal_5f9604a71f109.pdfIn PDF document text
    • https://tisatazufewuvo.weebly.com/uploads/1/3/1/1/131163687/60339226.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/2334268f-57b2-4f7d-b043-55aef3846559/17822189906.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02a8d424-2773-49a8-a46f-7ada3ba8facb/vevemapedadusireluzuris.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e0036c-2a85-4382-93e8-4c6bbe76951a/takefanefomul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e5a81c2-f76f-4a41-adbe-1c08dfe097e0/jevuvurozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dec3b2f7-b367-4c98-90f2-e6dfee2fcde1/45677532976.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/28680549686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4894b002-4e2d-45b0-bdcf-2152bfede6f7/tutipibegelug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f17c1c06-8bb7-438f-be47-da508219ff5f/reebok_zigtech_shoe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69233eae-366d-4a2a-bac5-6e065e9d8741/21249887780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd295963-4fa6-41e3-a301-0fa479ab4549/jojomu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7524c792-d476-4136-871e-dc3aa9fa4e87/tai_chi_knife_fighting_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/fifisoxipowatitixojowidex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb398643-d786-46c0-910c-24db458ebb4d/tisobowosixiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36d81a5e-b333-41c2-841c-1313747dce9a/athlean_ax1_equipment.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D88 4972 bytes
SHA-256: 3d09e97eb258daabe29b54c5118f0c3c7beb6e9cdbcf9eaf878d5260cdb4547d
font_01_sfnt_off00005e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E67 9640 bytes
SHA-256: d6af77f551cf1e677abb5cb31e903da53bf6de0c8271770e99bd70b7c25957ad
font_02_sfnt_off00007f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F51 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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