Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad61a0d2d51f4e8…

MALICIOUS

PDF

49.7 KB Created: 2020-08-03 07:18:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da0db21f724753974e32aa45805afea8 SHA-1: d299de32185a367ec67d89836618605572195254 SHA-256: 9ad61a0d2d51f4e8e3b162acc32524d40586b6de8c72ba95d0776912827773b9
152 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, characteristic of a link farm designed to obscure malicious destinations. One of the primary links, 'https://ttraff.com/pify?keyword=bbg+2.+0+pdf', is identified as a malicious redirector. The ML classifier strongly supports the malicious nature of this PDF. The document body contains garbled text and the URL 'https://ttraff.com/pify?keyword=bbg+2.+0+pdf', indicating a likely attempt to lure users to a malicious site.

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=bbg+2.+0+pdf
    • http://files.northbristolsuscom.org/uploads/1/3/0/7/130739480/vinok-jinevuv-sipupuvelugu-pogowe.pdf
    • http://files.wkuprecollegepiano.com/uploads/1/3/0/7/130739508/xapula.pdf
    • http://files.timothypbrown.com/uploads/1/3/1/3/131380063/6803e27.pdf
    • http://files.independencegala.com/uploads/1/3/0/7/130776081/vewesemis.pdf
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/kurelorujelodi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/wugenajukekuwugeza.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/1407217259.pdf
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/molamadewirarufirilonosa.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/68889911223.pdf
    • https://cdn.shopify.com/s/files/1/0433/8948/5221/files/7220938741.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0810/files/penotup.pdf
    • https://cdn.shopify.com/s/files/1/0434/3909/5973/files/cox_tv_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0428/9409/8598/files/56490242660.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2067/files/diwojogobedab.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_off0000672f.bin
d48738a1fc9ef7c183aed8f32b2f995f3e94f00c7fe000282ad727d500c79de4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x672F 5188 bytes
font_01_sfnt_off000078f8.bin
6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F8 1800 bytes
font_02_sfnt_off00008188.bin
54cad4f4cf64bd9e949145de305b121cc276fbfbb4a6212ef4f2b6d9a326bf05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8188 10188 bytes
font_03_sfnt_off0000a4b0.bin
0646a63a478fe53468b8dbbe05b608d617a04836cde27f490c8d0ce00ae8a9f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B0 16164 bytes

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