Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a11090a3679a74a…

MALICIOUS

PDF

43.3 KB Created: 2020-08-31 05:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d561e02f8946184373ac7ee9315c5ff6 SHA-1: 7f63fa4fd7b1ec982acb08fb6c6aa77760203c25 SHA-256: 2a11090a3679a74a665734d20546839f17f6b58ca21a4379798eb6a5e0eb0693
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure via the URL https://ttraff.com/wix?keyword=the+millionaire+booklet+free+download. Additionally, another critical heuristic identified a PDF link farm, suggesting an attempt to manipulate search engine results or distribute content widely. The document body, though heavily obfuscated, contains text related to 'the millionaire booklet free download', reinforcing the lure.

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.com/wix?keyword=the+millionaire+booklet+free+download
    • https://static.usrfiles.com/ugd/b8c837_87f33e0bafed4d5fab536b8245b00c96.pdf
    • https://static.usrfiles.com/ugd/aef5b7_04a67aa0f5874b8491756d46de8d52e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1d666e654ef4db9bbea46cad0030d6d.pdf
    • https://static.usrfiles.com/ugd/c3548c_745e99404f91414abb4fac487dd8bfc2.pdf
    • https://static.usrfiles.com/ugd/455f95_835177e5d0c344c9aed7259fce889fa5.pdf
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/cement_brick_making_process.pdf
    • https://cdn.shopify.com/s/files/1/0433/8948/5221/files/siboza.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/biozone_ap_biology_workbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8032/files/59842248695.pdf
    • https://cdn.shopify.com/s/files/1/0431/2783/2733/files/sinitumejimopiluxevur.pdf
    • https://cdn.shopify.com/s/files/1/0430/8680/7201/files/98763148365.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/vozezivuwusomeke.pdf
    • https://static.usrfiles.com/ugd/2c8d66_f61eb1f172e540fe9ce4acfa26e54989.pdf
    • https://static.usrfiles.com/ugd/b8c837_b63ab28da6b54445acc7164b03dcbc32.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_6d74a6a7d5374684bcf0bceac12bcef8.pdf
    • https://static.usrfiles.com/ugd/1f6d71_2dece99e785646f69199cd81d7b8fefd.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_off00006b76.bin
47f4064142d09ca33069f380486382fb3498812553755aefa64330a549d08c0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B76 5216 bytes
font_01_sfnt_off00007d18.bin
ff6fa504e6aa983c05ed249db0750fa1722feb1f8336d6e471984265975fca15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D18 10360 bytes

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