Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eafbfff16e27908…

MALICIOUS

PDF

38.2 KB Created: 2020-08-08 14:53:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fe694eec69b124c6f6c3e6ed4902ca4 SHA-1: a7e964e442022b6c85b2f661512d42ea3208e867 SHA-256: 1eafbfff16e27908f2d19531fc2dfb3a5f651887594384c7a0240afdf773aef9
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to potentially malicious redirectors or link farms. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a URL leading to ttraff.cc, a known malicious redirector. The document body, though heavily obfuscated, contains references to 'benedetta parodi libri pdf' and URLs that appear to be part of a link farm designed to attract search engine traffic. No scripts were extracted, but the primary attack vector is the redirection to malicious content via embedded links.

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=benedetta+parodi+libri+pdf
    • http://files.edgeofhell.com/uploads/1/3/2/7/132741109/refawexiga_vibuzalajepexom_xezamusudoje_fabojejuxakubow.pdf
    • http://dafusumi.collegeparkgirlsbasketball.com/uploads/1/3/0/7/130775735/3267d2d83.pdf
    • http://kuzafu.drneuhaus.org/uploads/1/3/1/6/131637240/xupasabulime.pdf
    • http://files.strack4pec.com/uploads/1/3/2/6/132695280/686115be.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/37568528674.pdf
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/exercicios_de_analise_combinatoria_resolvidos_e_comentados.pdf
    • https://cdn.shopify.com/s/files/1/0431/2337/6277/files/97181040346.pdf
    • https://cdn.shopify.com/s/files/1/0435/5224/3861/files/70150754984.pdf
    • https://cdn.shopify.com/s/files/1/0438/4371/5229/files/zabemek.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3486/files/tedezelom.pdf
    • https://cdn.shopify.com/s/files/1/0435/9618/5763/files/atomic_habits_by_james_clear_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/4229/2391/files/memogutepida.pdf
    • https://cdn.shopify.com/s/files/1/0432/4248/7972/files/53707383049.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/tagekijenugulevadaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/gigoluwato.pdf
    • https://cdn.shopify.com/s/files/1/0428/8466/1407/files/bapufevulifen.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/bederutirexuduziguxuta.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_off00005766.bin
fe40b1cf2f49bdc6c332fc2333deb32b108b5ab44fd3025fcdf456f915920ba2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5766 5044 bytes
font_01_sfnt_off00006899.bin
6d436f58d26ecf124c4406961e27db4210668f5f18c8647069f9d42496857932
pdf-font-stream PDF embedded font (sfnt) at offset 0x6899 10972 bytes