Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f499984e0477223…

MALICIOUS

PDF

46.8 KB Created: 2020-09-05 19:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e03918fa7f85bf8f949fd8badad6d3be SHA-1: 868ec09e711fa03f78f1f97f3cc94a2ec2254ce8 SHA-256: 3f499984e047722302e182e80a841bb54726a4b375c8910f6b258efcdb9c29de
154 Risk Score

Malware Insights

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

The PDF contains a prominent link to `https://ttraff.me/wix?keyword=video+from+instagram+direct+message`, which is flagged as a malicious redirector. The document body and embedded text also contain this URL and numerous other links hosted on `cdn.shopify.com`, suggesting a link farm designed to obscure the malicious destination. The ML classifier 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.me/wix?keyword=video+from+instagram+direct+message
    • https://cdn.shopify.com/s/files/1/0437/4816/3738/files/35561093895.pdf
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/66263266116.pdf
    • https://cdn.shopify.com/s/files/1/0449/8512/2984/files/gewitozusizusalikad.pdf
    • https://cdn.shopify.com/s/files/1/0433/7962/2040/files/somuronemume.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/91386372724.pdf
    • https://static.usrfiles.com/ugd/98e2de_d7ca7651d93e4fb19412cae9df5c16e1.pdf
    • https://cdn.shopify.com/s/files/1/0461/8099/1129/files/mulef.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/83750159367.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/rabili.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5798/files/tavojeregu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c66.bin
dfc5ef43e42071b941ae77ecb64a75b3838a931a0d128e6802375b8373fa7764		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C66 5064 bytes
font_01_sfnt_off00007d81.bin
906d28899b62059af8720d3d529cd4970600cac277e07bfe9c85b84142921ade		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D81 10228 bytes
font_02_sfnt_off0000a060.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA060 4324 bytes

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