Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f3e4cba50d12c4f…

MALICIOUS

PDF

49.1 KB Created: 2020-08-31 00:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1ccaeffa35d2a2e9394bcdb6046a545 SHA-1: 1949b43093a2fa021dd776ec253d1fec73cd9e16 SHA-256: 2f3e4cba50d12c4f447128de5db2826698dbd7b55939e378df7862a6b86bf384
152 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, suggests a lure related to a 'Sony rx10 iv advanced manual'. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports malicious intent.

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.me/wix?keyword=sony+rx10+iv+advanced+manual
    • https://static.usrfiles.com/ugd/b8c837_40de1ed594de4c2d8baf9abd8154e004.pdf
    • https://static.usrfiles.com/ugd/b8c837_30a319ecbfb8443d8351d97a3c243ee1.pdf
    • https://static.usrfiles.com/ugd/b9801a_3aa11121f27342ea89d8c0f32863027f.pdf
    • https://static.usrfiles.com/ugd/b8c837_337eaea437404630ab88b982952dc62e.pdf
    • https://cdn.shopify.com/s/files/1/0429/9381/1619/files/fujewagede.pdf
    • https://static.usrfiles.com/ugd/29c71c_bf44d7ed379449b383777debf2a677ce.pdf
    • https://static.usrfiles.com/ugd/d5415a_9f945af4a9c34fbeb6941bfcfc97e77a.pdf
    • https://cdn.shopify.com/s/files/1/0438/3231/1968/files/asterisk_ebook_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/91628917358.pdf
    • https://cdn.shopify.com/s/files/1/0438/7723/6904/files/cancer_de_cuello_uterino_bolivia.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_off0000812d.bin
0e2f5a8e7dabfca6c7127f1cbbd93fda883dc9c75ec47e2bab639d1ab7127c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x812D 5432 bytes
font_01_sfnt_off00009396.bin
fd53b1fc8b03ce5262d6813623874ed60f0f61acc6d4a38997108d818fbb74fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9396 10720 bytes

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