Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ea58ed14b990be…

MALICIOUS

PDF

47.7 KB Created: 2020-08-07 07:38:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aefae686752b5e714cce76060828d916 SHA-1: d653f8e1b389bb23c4fa90afa3bd620b10429b44 SHA-256: d9ea58ed14b990beac24109b749a4f2acf858e65b78917e3bc4b8b8e3d9c08cc
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious payload. The document body, though partially corrupted, contains the text 'Types of leadership styles in education pdf' and the URL that triggered the malicious redirector heuristic, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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=types+of+leadership+styles+in+education+pdf
    • http://malud.yeovilconcertband.com/uploads/1/3/1/4/131408027/bajifukixiz.pdf
    • http://files.longmeadowbaseball.org/uploads/1/3/2/6/132681863/6755313.pdf
    • http://files.jennadamberger.com/uploads/1/3/2/3/132303146/1643127.pdf
    • http://nibuwu.keiloreastrotary.org/uploads/1/3/2/8/132816202/nufavuriwem-sibewifiguvaga-jakuzudake-wemosituxawoli.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/sunavujugipubamovatu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0171/4587/files/17843374029.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/64768136679.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2753/files/fapobivuluzobigazavifujem.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/bepobitujetulagimu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/90170965740.pdf
    • https://cdn.shopify.com/s/files/1/0437/6743/1320/files/70257564954.pdf
    • https://cdn.shopify.com/s/files/1/0434/6000/1945/files/zanisanowugugaxaziv.pdf
    • https://cdn.shopify.com/s/files/1/0429/1208/8231/files/29597036050.pdf
    • https://cdn.shopify.com/s/files/1/0437/2617/6407/files/8904451521.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4405/files/bezejizigijijij.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/vowawuvumejabutewamotut.pdf
    • https://cdn.shopify.com/s/files/1/0430/8067/9577/files/wordly_wise_3000_book_6_lesson_2_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0429/8617/6665/files/ben_roethlisberger_contract.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_off00007ba4.bin
9cf99f0f10af989d5651f7cef01a1e116cb7a3c26e95fc754ad8cef198c81d2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA4 5296 bytes
font_01_sfnt_off00008daa.bin
3a09f9567933d3e9daab67dc4de89fa0c1f2f902d0d4bdb6ffd9dda270c2f0b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAA 10560 bytes