Malicious PDF — malware analysis report

Static analysis result for SHA-256 f782ae04838def37…

MALICIOUS

PDF

49.7 KB Created: 2020-08-12 19:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b94c6dc863d4af3fc889fbce09a98d8 SHA-1: 269f67b0a484adfa3c1eef644d6673c28f1f9267 SHA-256: f782ae04838def3789230da8f66fef009bd799c60ca66206e577300b45d617a1
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a primary link pointing to a known malicious redirector at 'https://ttraff.cc/wb?keyword=kaddish%20prayer%20pdf'. This redirector likely leads to further malicious content or phishing pages. The document body itself is heavily obfuscated but contains references to the redirector URL, confirming its presence within the document content. The presence of numerous links hosted on cdn.shopify.com, while some are confirmed benign, suggests an attempt to blend malicious links with legitimate-looking ones.

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.cc/wb?keyword=kaddish%20prayer%20pdf
    • http://noziva.brisenodds.com/uploads/1/3/2/8/132816066/8282708.pdf
    • http://rakitiz.orchardstreetmusic.uk/uploads/1/3/0/9/130969060/simed-dusazewi-gikenug.pdf
    • http://files.slumberadventures.com.au/uploads/1/3/1/1/131164431/1fb44b.pdf
    • http://files.mhlff.org/uploads/1/3/1/6/131607407/9967529.pdf
    • http://files.mrstutsmathclass.com/uploads/1/3/1/8/131871980/nalawibi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5163/7141/files/dotumem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42632515291.pdf
    • https://cdn.shopify.com/s/files/1/0440/8921/3093/files/xipamikogosejazavonurawep.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/sadulenufopusogiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/6626/0642/files/80656341557.pdf
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/71325696151.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/46897955010.pdf
    • https://cdn.shopify.com/s/files/1/0430/7451/9191/files/27637333242.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2106/files/89164516795.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/travel_form_vs_mount.pdf
    • https://cdn.shopify.com/s/files/1/0433/0556/6366/files/jumubupajejifaleta.pdf
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/hgec_better_bouncing_boobs_hcup_ecup_dcup.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/phonetic_table_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/46221891452.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_off00007b92.bin
6b1317db254c1b244c59373aff21079d22baff7e10c5491995ffa47d154b5ab1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B92 5168 bytes
font_01_sfnt_off00008d30.bin
ea1a6b3a3ef4697b8983b4ccf21de735e64896b52001128f5f3df746514e2c2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D30 14188 bytes