Malicious PDF — malware analysis report

Static analysis result for SHA-256 916f0d5070ae8cda…

MALICIOUS

PDF

46.3 KB Created: 2020-08-20 20:32:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5439add820f670772960080114733a63 SHA-1: 9ca9ac1bc31d533944d5c2ad046c37cec27c3d16 SHA-256: 916f0d5070ae8cda63672be8e210a6a8b4c730c36f3ab9b72eeddf81115643f7
120 Risk Score

Malware Insights

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

The PDF file contains a link disguised as a download for 'Bluestacks free for laptop windows 8'. This link, however, redirects to a known malicious domain (ttraff.com), indicating a phishing or malware distribution attempt. The PDF structure and embedded link farm suggest a tactic to generate traffic and potentially lead users to malicious content.

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.com/pify?keyword=bluestacks+free++for+laptop+windows+8
    • http://files.freeclinicsv.com/uploads/1/3/1/1/131164129/8052866.pdf
    • http://gagug.exploreproductivity.com/uploads/1/3/0/9/130969472/jajolulepi.pdf
    • http://gakofosi.monumentalmusicals.com/uploads/1/3/1/3/131380600/zebupujaxaniwof-saxikapud.pdf
    • http://files.missionbeachtc.com/uploads/1/3/0/8/130814208/c6364b28f695.pdf
    • http://gakofosi.monumentalmusicals.com/uploads/1/3/1/3/131380600/ze
    • https://cdn.shopify.com/s/files/1/0440/0444/2262/files/bhaktha_prahlada_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/8301/4048/files/windows_7_pro_key.pdf
    • https://cdn.shopify.com/s/files/1/0437/4613/2119/files/89687565527.pdf
    • https://cdn.shopify.com/s/files/1/0431/3058/5250/files/duxijosesuxukatiwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/71921568157.pdf
    • https://cdn.shopify.com/s/files/1/0431/0525/5577/files/90724807176.pdf
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/sewuvenonekekoxemawidumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98572357872.pdf
    • https://cdn.shopify.com/s/files/1/0431/5732/3925/files/1370333929.pdf
    • https://cdn.shopify.com/s/files/1/0430/2487/5674/files/aarakocra_dnd_5e.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/philosophy_of_social_work.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/33559240029.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_off000075cd.bin
3f2bb2d346a5c7c38bf57a3cc070f3785e745f6be701d4e09c55faec0344e4ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75CD 5548 bytes
font_01_sfnt_off000088c8.bin
67331660f9db99851fcd455459c288d4d9207ebdbb90d608b18602a6d75c9418		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C8 10312 bytes

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