Malicious PDF — malware analysis report

Static analysis result for SHA-256 00eea84eb59568fb…

MALICIOUS

PDF

37.8 KB Created: 2020-09-01 21:18:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32dc61e5cbea0a6f19faf47275adaa93 SHA-1: e9a46b9942622669f4de42f74758b83db54c6c2b SHA-256: 00eea84eb59568fbe542580f219278525d0a95477c0bda12ddd134131614dc4f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, including one to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, contains keywords related to sheet music and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of a phishing or malware distribution attempt.

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.com/wix?keyword=abide+with+me+sheet+music+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0456/9146/9983/files/oceans_hillsong_remix.pdf
    • https://cdn.shopify.com/s/files/1/0439/1839/3499/files/blazor_bootstrap_template.pdf
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/93849916995.pdf
    • https://cdn.shopify.com/s/files/1/0435/0171/5622/files/32614539481.pdf
    • https://cdn.shopify.com/s/files/1/0431/3382/9271/files/apsu_rewa_exam_form_2018-_19.pdf
    • https://static.usrfiles.com/ugd/5b9a87_d63b31112c8a41789b9f7fb7f4da1cb4.pdf
    • https://static.usrfiles.com/ugd/739437_d3d1cfb4d80e409ab3b69cfc9ce7c69b.pdf
    • https://static.usrfiles.com/ugd/57c819_6f08322fd5b04a50a236ae4e90062562.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0183fa233b04eaba1a5c57c03c6be3f.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_60b9ba7e9491489c8af333d561341488.pdf
    • https://static.usrfiles.com/ugd/c8a981_1a37cd8e04514e97a5d19ef9e151921e.pdf
    • https://static.usrfiles.com/ugd/b42fd6_422b98efcc94469195c98ab2d77923b1.pdf
    • https://static.usrfiles.com/ugd/c345b0_6cba856836cf4e8cbd0ad7401e7330aa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/sokifovozaxatip.pdf
    • https://cdn.shopify.com/s/files/1/0439/8671/4782/files/29582000976.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004957.bin
db7d33e14adba65baca35e20b12002416b8d1428af3792eaa52b0111dc272fba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4957 4944 bytes
font_01_sfnt_off00005a43.bin
9940608bc60ada4b0449d649c6f4ff1d12f71472c2ac042e169f209c68f3e75b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A43 9896 bytes
font_02_sfnt_off00007c28.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C28 4324 bytes

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