Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cbf3e8a10e11fb5…

MALICIOUS

PDF

38.6 KB Created: 2020-08-21 18:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0c04e964e72b5c6e80511956ddc7050 SHA-1: fa14dbe3ab73ea02dc528421d114f4b5c0b601b4 SHA-256: 3cbf3e8a10e11fb5240bfcc0e2dd4e9fdc2d81bafe2faee54dabf617924a0df4
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a fishing report. The document also features a large number of embedded links, many pointing to Shopify domains, likely as part of an SEO link farm to improve search engine ranking for malicious content. The ML classifier strongly indicated maliciousness.

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.com/pify?keyword=chatfield+lake+colorado+fishing+report
    • http://natuw.meridiancyclingclub.com/uploads/1/3/0/7/130776886/pigudapikepefav-wimemugegan.pdf
    • http://files.smartbrainenglish.com/uploads/1/3/0/7/130738970/koxukubenuvavov_juvilo.pdf
    • http://kibef.virtualrisksolutions.com/uploads/1/3/1/6/131637284/4a4f75c7f.pdf
    • http://wafidug.1911cigars.com/uploads/1/3/2/8/132816042/9464537.pdf
    • https://cdn.shopify.com/s/files/1/0429/3351/8489/files/rakuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/zusonu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/46493454777.pdf
    • https://cdn.shopify.com/s/files/1/0435/9425/2456/files/ladixitavuju.pdf
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/98791009646.pdf
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/statistics_formulas_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0435/4995/0116/files/carboplatin_full_prescribing_information.pdf
    • https://cdn.shopify.com/s/files/1/0463/6200/1563/files/49580532467.pdf
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/senuvabadotob.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/15986996519.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_off00005893.bin
1551f0af3b43089a22534b62fa8db9a0f037594fdefcf3f02b019de510df9b68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5893 5388 bytes
font_01_sfnt_off00006ae0.bin
176d670cd75e133070809a95378a8797a969fb0f7a3dc5eff4877a80c08e2a88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE0 10244 bytes

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