Malicious PDF — malware analysis report

Static analysis result for SHA-256 1940b18b7c284fd5…

MALICIOUS

PDF

344.3 KB Created: 2020-08-16 12:28:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c542220e620562ef3a4d7f691b1f55e SHA-1: 4a5a088fd36fa0270b9112f4af5a47fffa09ee2e SHA-256: 1940b18b7c284fd533145171a32a1cdb3dbeae5f8ffd7bdd9ac2b2e58d25ba05
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL, https://ttraff.com/pify?keyword=new+guidelines+lipid+management, is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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.
  • 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.com/pify?keyword=new+guidelines+lipid+management
    • http://files.justtwoeyes.candletothesun.com/uploads/1/3/0/7/130739309/makegab.pdf
    • http://files.booksaregems.org/uploads/1/3/1/8/131872269/lilepa.pdf
    • http://files.mastermindprdubai.com/uploads/1/3/1/4/131407155/dipevura-wokokij-mavimagufa.pdf
    • http://files.davesartdimensions.com/uploads/1/3/1/6/131606348/vojetiborakupo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6180/4197/files/biwadujobirijosusokeju.pdf
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/viva_la_vida_tablature.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/32080720489.pdf
    • https://cdn.shopify.com/s/files/1/0434/9699/7030/files/how_to_draw_a_5_point_star.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/natepuwitis.pdf
    • https://cdn.shopify.com/s/files/1/0440/4648/3606/files/wepanoruxularibo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7331/5740/files/pmbok_6th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/ribisubujegogemafixevo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2104/0792/files/good_morning_bhagwan_ka_photo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9108/2918/files/whirlpool_wrx735sdbm00_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/2943/6315/files/44409832079.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004f52b.bin
6febad66148e2a9e3f58115d4d01778dde015ea8eb0974aaa4fc5ac7054510ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F52B 5244 bytes
font_01_sfnt_off00050704.bin
186bf25fa0585c654e1b854a47b2c429209acc07dba730f876f3cbed2b7ea36d
pdf-font-stream PDF embedded font (sfnt) at offset 0x50704 17304 bytes
font_02_sfnt_off00053ce8.bin
ebaa9d42c58e3fd25c8264bcf4ef2319fee467c92cf53dcc1f377a20fc8d39b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x53CE8 16148 bytes