Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e62fe98dbfb4a95…

MALICIOUS

PDF

42.7 KB Created: 2020-08-20 13:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66a432ecda8b5e63522676ae494175c1 SHA-1: 66506a5b68caefb409c2192f15a3323f1f20058b SHA-256: 4e62fe98dbfb4a95674888c8eea203665250f355be7904bb5cb3e7e8aece7946
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=dallas+cowboys+injury+report+week+1'. The document body, though partially corrupted, also contains this URL and other Shopify-hosted PDF links, suggesting a link farm or redirection strategy. The primary intent appears to be directing users to malicious infrastructure through these embedded links.

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.ru/pify?keyword=dallas+cowboys+injury+report+week+1
    • http://files.snappedtogetherphotobooth.com/uploads/1/3/0/9/130969291/74d667.pdf
    • http://files.oxfordmomsandtots.com/uploads/1/3/0/8/130873872/90b02.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/instagram_private_video_by_link.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/mugid.pdf
    • https://cdn.shopify.com/s/files/1/0438/1802/5117/files/vodinukuxugi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/cause_and_effect_worksheets_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0433/5101/5577/files/admirvel_mundo_novo_download_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/82973805570.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/zovudova.pdf
    • https://cdn.shopify.com/s/files/1/0435/9903/6579/files/24071987374.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/dupumijijir.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/40246341635.pdf
    • https://cdn.shopify.com/s/files/1/0448/1787/5110/files/solving_behavior_problems_in_autism.pdf
    • https://cdn.shopify.com/s/files/1/0428/1116/2790/files/88624068142.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_off00005dc5.bin
a8e98c4d2fb1d1b3bd698dbcd9d5b53d1b5fa7cf2a1f809b64cd4e9516c2691a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC5 5452 bytes
font_01_sfnt_off0000707b.bin
9759cdf497b471c7b0b93fa264e5662230d82a837ca5ac1d2ee61998009293ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x707B 14872 bytes

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