Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75ed25d996294c8…

MALICIOUS

PDF

41.1 KB Created: 2020-08-20 19:05:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31d3b605fa6d27089317701a517eb921 SHA-1: f1234e5be82611d474a34f1fbeee7e8d4deae6c9 SHA-256: f75ed25d996294c86888d5da7e384961da961b96cee02dc758d12c633e409b8f
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The primary malicious link identified is 'https://ttraff.ru/pify?keyword=breakaway+civilization+pdf', which is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on various domains, suggesting a coordinated effort to drive traffic to malicious content. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=breakaway+civilization+pdf
    • http://sekumumef.deardrew318.com/uploads/1/3/1/4/131406071/wegazekenisazoxeg.pdf
    • http://files.arhstyles.com/uploads/1/3/0/7/130739719/5869010.pdf
    • http://damek.marcusjuno.com/uploads/1/3/0/9/130969596/4509333.pdf
    • https://cdn.shopify.com/s/files/1/0431/4827/9957/files/tefaxisijarozenusakava.pdf
    • https://cdn.shopify.com/s/files/1/0439/1557/5464/files/80678770592.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6917/files/84218229256.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/atoning_dragoon_kain.pdf
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/foridonuvef.pdf
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/85173148707.pdf
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/gasekewimixafisawu.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_off000060dc.bin
dc2e4b956251ae4060e9b2ee28a5cbf12af4592107a87c662db98f794b3ccc19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DC 5388 bytes
font_01_sfnt_off00007369.bin
5c5eb474a6481bd68a4c6ce19d0b09cf66ee9f733b3d1e5b401e4ef8499473cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7369 10712 bytes

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