Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b88ee893bfbf980…

MALICIOUS

PDF

48.4 KB Created: 2020-08-12 15:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1eb7cf79bc93fe7a52b9d0a9e5547f9d SHA-1: 6f38b35de6601c3f4541ac5f309008e6e1147ecc SHA-256: 0b88ee893bfbf98009c2bbdc9d61953e5f1a6b75ce541a158e3e48a612f20f2d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a 'bio data form'. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to benign Shopify domains. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to 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=bio+data+form+pdf+simple
    • http://gipedite.grandcanyonschoolpta.org/uploads/1/3/1/4/131453133/xuxivezezowuxuduz.pdf
    • http://files.henfieldcameraclub.net/uploads/1/3/1/4/131407635/bufoku_filadegakofu_risoxitiled_godepafujebata.pdf
    • http://files.leahatwood.com/uploads/1/3/1/3/131379256/pibur-totoxobe-favekirela.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/brahminical_patriarchy.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/lineperikerapasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9933/2516/files/mulezubafuxekuralag.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/22266705836.pdf
    • https://cdn.shopify.com/s/files/1/0429/5963/4591/files/vibipipivajegoxomosel.pdf
    • https://cdn.shopify.com/s/files/1/0431/8566/8259/files/turkey_bird_farming_bangla.pdf
    • https://cdn.shopify.com/s/files/1/0430/0685/3269/files/93890356006.pdf
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/72079526302.pdf
    • https://cdn.shopify.com/s/files/1/0431/7347/8560/files/gemupukizivubaxal.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/delegation_and_decentralization_of_authority.pdf
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/fudonoruwevijinaso.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/dewisamapopetevuruvezi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008175.bin
2e5c9d1adb01b599df82593572d2cd02f2340f0477645b020444b05f3f7022c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8175 5236 bytes
font_01_sfnt_off0000932f.bin
44c1cd1a09b93d1766a752b9fa825727daa54f647d1876c841183db7eb10d5e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x932F 10036 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.