Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c41d2413b14777…

MALICIOUS

PDF

51.4 KB Created: 2020-08-12 11:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1e8c77b1efc9a020ad03fdf57124477 SHA-1: 85fd563eaf945ef51daad21919a04f024304c94c SHA-256: 14c41d2413b14777835f52a85156e27f6631fca7cd94a067570fc8e49ebb9071
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, masquerading as a document about Agile vs. Waterfall methodology. One of the primary links, 'https://ttraff.com/pify?keyword=agile+vs+waterfall+methodology+pdf', is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness, suggesting the document's primary purpose is to redirect users to potentially harmful content.

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.com/pify?keyword=agile+vs+waterfall+methodology+pdf
    • http://files.cohncentric.com/uploads/1/3/0/8/130874411/logilebizalobi_wozowaba.pdf
    • http://files.prairiekennel.com/uploads/1/3/1/4/131407547/fikeru.pdf
    • http://files.phase3skilldevelopment.com/uploads/1/3/1/4/131406684/e6e22b3c.pdf
    • http://files.crookcountylibrary.org/uploads/1/3/2/7/132741211/kezomipiwewiw.pdf
    • http://files.onegktraining.com/uploads/1/3/1/3/131397946/puzumotinipene-diwarikak-regur-tivuzi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6769/4501/files/26906757199.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/30428859182.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/sobufa.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/76244040641.pdf
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/20309227918.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/nazokujakobevavi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7413/9813/files/47001688155.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/pewagosir.pdf
    • https://cdn.shopify.com/s/files/1/0435/6761/2063/files/learning_styles_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/absceso_cutaneo_recurrente.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000673d.bin
f77942d3d9f9f92ccbe3647efae2bb30cf7687a62f1c2385ab82b7e34a8ba9a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x673D 8752 bytes
font_01_sfnt_off0000845e.bin
9bb4bb12312539fd630afc0313c8a26d157562271e5294e9bd7e1246f5383ee8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x845E 5696 bytes
font_02_sfnt_off000097b5.bin
136b39a164154619271a58af709e848be7ebe3d2b7244e4e96b2de935cee305b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97B5 13032 bytes

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