Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce83b3bb136637ab…

MALICIOUS

PDF

42.3 KB Created: 2020-09-19 17:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93ef831e72c6c54671fec49dc3e3491a SHA-1: 5a96a93b6e94ec1d2fd790d9d33e9893b4872b80 SHA-256: ce83b3bb136637abccca96a48d196cf470d3e960486425e7e4ba9410bb988c25
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One critical heuristic identified a link to known malicious redirector infrastructure, and another flagged a mass external PDF link farm. The document body contains obfuscated text and URLs, suggesting an attempt to disguise the malicious intent. The primary goal appears to be directing users to potentially harmful websites through a deceptive link-based lure.

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.club/wix?keyword=molly+great+expectations
    • http://viwiguzow.homesteadfamilygrain.com/uploads/1/3/0/8/130813992/wixabejibut.pdf
    • http://files.bruceskids.com/uploads/1/3/1/4/131438093/jiwijuj.pdf
    • http://lawixafo.ikhlastours.co.nz/uploads/1/3/2/3/132303093/9422080.pdf
    • http://files.isntitbeautiful.net/uploads/1/3/0/8/130814112/palimaxa.pdf
    • http://files.missjordansclassroom.com/uploads/1/3/0/7/130776841/5406440.pdf
    • http://files.sciotoheritagetrail.com/uploads/1/3/1/3/131380029/cf218b32.pdf
    • http://pavexela.davidgloverproductions.com/uploads/1/3/0/9/130969465/161ea99e8f60a4.pdf
    • https://820fc35e-ab4b-4567-9b10-e0604cc34682.filesusr.com/ugd/63f22d_a8070efa6b9a4f6aa244ddf4a69b27e8.pdf?index=true
    • https://d618bce5-667d-49ec-a7cb-02f5a3ee5525.filesusr.com/ugd/ff2e72_a17f56ce907e4be69fdda62e68bdbc59.pdf?index=true
    • https://b8102783-8d92-4cfc-9b55-a8714b9ae580.filesusr.com/ugd/e23fbb_22af2c14a55c4ea0b9b2fef88b26a16b.pdf?index=true
    • https://7b5a6705-c846-48ba-9e26-cd66795f4401.filesusr.com/ugd/fafc38_dc0be98ec62e4c23b7fe98336a229f06.pdf?index=true
    • https://51a6a8b1-f465-4af2-bb89-cff9ee05e9cd.filesusr.com/ugd/a31856_01f41f428a2e480fbed58d5ae7903b2e.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/94401458625.pdf
    • https://cdn.shopify.com/s/files/1/0439/7016/6942/files/89475220017.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/60359644250.pdf
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/ilco_key_blank_directory.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/baazigar_song_aye_mere_humsafar.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_off000066e9.bin
87be315678e9b252a853cb3a9f5ebf6906c858627de7bbccda6fb2d874332108
pdf-font-stream PDF embedded font (sfnt) at offset 0x66E9 5276 bytes
font_01_sfnt_off00007907.bin
148a6b160ae964c45e952c54199094b440ba11b369971d159a707e87406cd142
pdf-font-stream PDF embedded font (sfnt) at offset 0x7907 10332 bytes