Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebeed691bd76f0f3…

MALICIOUS

PDF

41.5 KB Created: 2020-09-15 19:30:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b583b351615cd9346650378cc33180ed SHA-1: 52464a2e7b5579904299e41053303930843c4938 SHA-256: ebeed691bd76f0f37a82296df37de85acd112deb70fb03b7c2ef9d844f8d4263
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to its structure containing a large number of external links, a common tactic for SEO poisoning or link farming. One of the embedded URLs, 'https://ttraff.club/pify?keyword=rdu+to+san+diego+one+way', is identified as a malicious redirector. The document body, though partially corrupted, contains text related to travel and the malicious URL, suggesting a lure to entice users to click the link.

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.club/pify?keyword=rdu+to+san+diego+one+way
    • http://niraru.poloprague.com/uploads/1/3/1/4/131453501/jawukaweda.pdf
    • http://gunog.inzei.tokyo/uploads/1/3/1/4/131407552/bakusiv-lavafokuxe-newajemem-bajepoketep.pdf
    • http://files.thehonestytree.com/uploads/1/3/1/4/131437370/tatuwobegapifidugivi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/21595953228.pdf
    • https://cdn.shopify.com/s/files/1/0428/3331/3958/files/mandibular_orthognathic_surgery.pdf
    • https://cdn.shopify.com/s/files/1/0438/9198/2491/files/algebra_2_factoring_test_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/58367727752.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wojifuxazax.pdf
    • https://cdn.shopify.com/s/files/1/0454/2329/6680/files/tipicidade_formal_objetiva_e_subjetiva.pdf
    • https://cdn.shopify.com/s/files/1/0434/2313/7957/files/cutting_autolesion.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/bivabixakepopevujop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6701/5335/files/24557210104.pdf
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/nezefaludibomubomigip.pdf
    • https://cdn.shopify.com/s/files/1/0460/1384/1567/files/pilotixeza.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/organel_sel_beserta_fungsinya.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_off0000636b.bin
d0251c88af60f26374ad8630fab0e75dc4ae1b630a05e440052df25516372e08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x636B 5068 bytes
font_01_sfnt_off000074df.bin
304e8ffece9b9b0217b2b90bc924cc087f094de00dd0ea29e8989de5478dc29d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DF 10720 bytes

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