Malicious PDF — malware analysis report

Static analysis result for SHA-256 45189ba2a9646872…

MALICIOUS

PDF

64.2 KB Created: 2020-09-13 19:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3902bbc36b66373a365ea3c1209f3863 SHA-1: e4044d4ace4d3156859f15afbeb5cbcea32360e3 SHA-256: 45189ba2a9646872772ac22666ed2a176811966ac2fce7cd3048f7b746dc079e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.link/wix?keyword=r+words+speech+therapy'. Additionally, a large number of other PDF links were found, suggesting a link farm or a broad distribution attempt. 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.link/wix?keyword=r+words+speech+therapy
    • http://xemuwene.michiganpiperehab.com/uploads/1/3/1/4/131406086/ridejif.pdf
    • http://lutaxovor.charlotteponyclub.com/uploads/1/3/1/3/131382257/134f7d82874c91.pdf
    • http://files.cottageonthecrinancanal.com/uploads/1/3/1/4/131410234/8142664.pdf
    • http://lexano.carlaposenjak.com/uploads/1/3/0/7/130776279/gorutelupekiwese.pdf
    • http://files.postyourexam.com/uploads/1/3/1/6/131607010/5cda7.pdf
    • http://files.scunthorpedivers.co.uk/uploads/1/3/1/3/131383959/keruxusodetan.pdf
    • http://pefego.mauitravelpartners.com/uploads/1/3/1/8/131857284/4459f5e080a.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_096e94ab7500495c9a91087e2144edb3.pdf
    • https://static.usrfiles.com/ugd/9734e7_7c916ba1967d45c58d6fb66b89c131da.pdf
    • https://cdn.shopify.com/s/files/1/0429/2168/9254/files/33368350343.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5286/files/gufalasaxumon.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_off0000be4b.bin
182715d2b7acca67d4bcfdcfcc7566326a3e419f54902255d6d8074334d8e6d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE4B 5328 bytes
font_01_sfnt_off0000d082.bin
ffd2d1beb294a88ed98a25cfc1d16b83a90c26c866b1bce02e02fcb433fa462c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD082 10540 bytes

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