Malicious PDF — malware analysis report

Static analysis result for SHA-256 7119f26dab8d9803…

MALICIOUS

PDF

40.8 KB Created: 2020-08-07 08:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 387f4713a50b0701036478693d27f99b SHA-1: 84b8efdb1acfde3c3e5e16973a5234b4d87f4a62 SHA-256: 7119f26dab8d9803dafe0b696a9cd8873ffd908fe76d9eb9448ab8f6ae91c683
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, with the primary link directing to a known malicious redirector. This suggests the document is designed to redirect users to malicious websites, potentially for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=corporate+entrepreneurship+and+innovation+morris+pdf
    • http://files.corruptcarbonworks.com/uploads/1/3/1/8/131856917/b170afa.pdf
    • http://files.thebrickva.com/uploads/1/3/2/6/132695416/mixewew-bisavupatava-weworopo.pdf
    • http://files.kellypiliouras.com/uploads/1/3/1/4/131408103/tivokum.pdf
    • http://files.theartofmonicareekie.com/uploads/1/3/0/9/130969237/5673618.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/76498739320.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/gitevibukuxaba.pdf
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/dezevutudukax.pdf
    • https://cdn.shopify.com/s/files/1/0431/4382/3511/files/60031959392.pdf
    • https://cdn.shopify.com/s/files/1/0432/4392/9757/files/mercados_bursatiles_e_instrumentos_financieros.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/black_boy_wright.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/22919694001.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3282/files/13346681296.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/47280169771.pdf
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/dazalepamekajuzadivalofu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/melafasotak.pdf
    • https://cdn.shopify.com/s/files/1/0437/1031/6694/files/14468245186.pdf
    • https://cdn.shopify.com/s/files/1/0438/2025/3344/files/rowaxegajuloguv.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061b9.bin
6c72b04a0c63aa6fbbd6ab05e46736f110f2920b750542f2739bdccab7a4a148
pdf-font-stream PDF embedded font (sfnt) at offset 0x61B9 5216 bytes
font_01_sfnt_off0000734f.bin
a98f1f38bd243ee0b6efa6a8efba76ce2baab941c12349b3edc8efe1ef72b1e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x734F 10100 bytes