Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2cf18d3371eae77…

MALICIOUS

PDF

43.4 KB Created: 2020-09-22 11:39:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0302030fc8261cfce5f1b78be753f36 SHA-1: 67f9396e970c500e8c94bf97d4241fe7d71c3a12 SHA-256: d2cf18d3371eae77f44a0400b6040acc396c6676455350a196373756ec67ce9b
150 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as free downloads for an engineering book, but these links redirect to malicious infrastructure. The primary redirector URL is https://ttraff.me/wix?keyword=engineering+by+design+voland+pdf+free+download. This indicates a social engineering tactic to trick users into visiting potentially harmful sites or downloading malware. The ML classifier strongly supports the malicious nature of this PDF.

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.me/wix?keyword=engineering+by+design+voland+pdf+free+download
    • http://files.malvern-electrics.co.uk/uploads/1/3/2/6/132682039/9574694.pdf
    • http://files.openchristmasgreatyarmouth.org/uploads/1/3/1/4/131453904/wozikix.pdf
    • http://pazereb.shrewsburycobblershop.com/uploads/1/3/0/9/130969690/5872923.pdf
    • http://golosek.maltafpd.com/uploads/1/3/1/4/131453150/rediwofodudag-firerizena.pdf
    • http://files.jimosphoto.com/uploads/1/3/1/4/131406222/2415258.pdf
    • http://files.annalisalosangeles.com/uploads/1/3/1/4/131414561/narisa-wopudul-lufalofi-noruzoves.pdf
    • http://rewilul.wstcharity.com/uploads/1/3/1/6/131606295/sureme_xekoz_tufigunonoz.pdf
    • http://files.thefashionablecrafter.com/uploads/1/3/2/6/132695571/1240797.pdf
    • http://ragon.westsoundstem.org/uploads/1/3/1/6/131606289/webos_xunatan.pdf
    • http://kigeta.fiddlestixdevonrex.com/uploads/1/3/1/1/131163599/8699068.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49726552648.pdf
    • https://cdn.shopify.com/s/files/1/0440/2675/7270/files/sim_card_cutting_template_micro_to_nano.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000605d.bin
40139a7cc1c0eaa2e3205e2a2ea2dae4ffbf30b9924e962412d37ccf1d7e5ca2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x605D 5560 bytes
font_01_sfnt_off00007370.bin
6cb10076eca30a126bc8f71014eb6b942d82ab166c7dee9b05b5226c7968b533		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7370 2092 bytes
font_02_sfnt_off00007c76.bin
28564d60da1e0233ce8b5188f157418b66f4a283775329e05141a69f520626c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C76 10508 bytes

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