Malicious PDF — malware analysis report

Static analysis result for SHA-256 e755329897db04e1…

MALICIOUS

PDF

40.6 KB Created: 2020-08-08 14:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 971e3a684bc6d6b7df6251b99f1fa230 SHA-1: 99f5c34d1799d07cdab9f9e0f2f7c954b7823ddc SHA-256: e755329897db04e19855d399b47cccb00adfa50b6c8aae3728c51f52fb21de67
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as search engine results for free book downloads, with the primary link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Download buku akuntansi biaya mulyadi pdf' and the malicious URL, reinforcing the lure. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to malicious infrastructure.

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.
  • 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.
  • 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/pify?keyword=download+buku+akuntansi+biaya+mulyadi+pdf
    • http://files.brrclub.com/uploads/1/3/0/8/130874615/navexofelide.pdf
    • http://files.themagictraveler.com/uploads/1/3/2/7/132712206/wenorolagejasona.pdf
    • http://files.blackrivertimes.com/uploads/1/3/1/8/131871984/kosiporexozebor.pdf
    • http://files.sklgtraining.com/uploads/1/3/1/4/131437378/3ff4af81a01a3.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2692/files/purodokibezuzusomojadeto.pdf
    • https://cdn.shopify.com/s/files/1/0432/2331/8686/files/bisagebuximin.pdf
    • https://cdn.shopify.com/s/files/1/0430/7563/3306/files/77697278138.pdf
    • https://cdn.shopify.com/s/files/1/0429/2132/8807/files/captivating_guided_journal.pdf
    • https://cdn.shopify.com/s/files/1/0432/7496/1059/files/gomojejafizesedutufugune.pdf
    • https://cdn.shopify.com/s/files/1/0432/2331/8686/files/952332676.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/photoshop_scale_layer.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/zewagoxavadigewap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdf
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/82129174636.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/6848819212.pdf
    • https://cdn.shopify.com/s/files/1/0433/8650/3326/files/jutupalavux.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000604c.bin
26dd383300e24937d0d52b7e9e42820f880b03fcc0929df30b5021a2552d2aa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x604C 5488 bytes
font_01_sfnt_off00007306.bin
4cd1cc9cf9363b12a6135b05102fb1f9640f570d0b46af396b07fee12587265e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7306 10008 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.