Malicious PDF — malware analysis report

Static analysis result for SHA-256 305fb926455ab09d…

MALICIOUS

PDF

56.9 KB Created: 2020-08-02 21:59:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acb9426be906e83a9e2a1918b47eb82a SHA-1: dbb6b05bbcf2f88a87e00b4b8a6061567ed31e8d SHA-256: 305fb926455ab09de32cc7c763d3a6f7fcd4fbc1179dfeb3e92a87427438a2d7
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary link pointing to a known malicious redirector. The document body, though partially corrupted, contains text that appears to be a lure related to 'Fallout new vegas gun runners arsenal'. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating a phishing or malware distribution attempt. No scripts were extracted from this sample.

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.com/pify?keyword=fallout+new+vegas+gun+runners+arsenal
    • http://files.hogsandairdogs.com/uploads/1/3/2/7/132740467/a17557e.pdf
    • http://files.tidetoadream.com/uploads/1/3/0/7/130775528/mexajubux_wefeja_zavedirejagix_kitafo.pdf
    • http://files.periodisasi.com/uploads/1/3/1/4/131407424/vufavezavis-mokomorulu.pdf
    • http://files.mathewvieira.com/uploads/1/3/1/4/131437775/segek-tamivima-bajali.pdf
    • http://files.roaddogsmusic.com/uploads/1/3/2/3/132302978/loroxeduzonetilekuba.pdf
    • https://cdn.shopify.com/s/files/1/0433/9918/4551/files/sesipamidotonotumopamuto.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0731/files/43298183655.pdf
    • https://cdn.shopify.com/s/files/1/0436/0205/1235/files/4546827350.pdf
    • https://cdn.shopify.com/s/files/1/0438/7205/9547/files/27158752698.pdf
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/tijap.pdf
    • https://cdn.shopify.com/s/files/1/0440/5883/7142/files/fallout_new_vegas_walkthrough_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0437/0684/3288/files/kizuma.pdf
    • https://cdn.shopify.com/s/files/1/0428/7964/7903/files/faludagajuvugakopusotazo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1512/5662/files/58599673821.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cb5.bin
88aa99d0ab9ad6920230ce5f96b6499aba31268cc89361e64bf605c8f51ab3c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB5 4792 bytes
font_01_sfnt_off00008d2d.bin
cbb154bc050053800bc1cbdc62be865630848c28a688bc5f5951ff1dd1ded270		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2D 11192 bytes
font_02_sfnt_off0000b351.bin
c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB351 16092 bytes
font_03_sfnt_off0000c819.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC819 4324 bytes

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