Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbbd2dc8fb3bfa39…

MALICIOUS

PDF

57.5 KB Created: 2020-08-07 15:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94851eba0999c354ddf3f672159d4fd1 SHA-1: a9986f785ddae074c4f1a1baf8fc6f7f1ead61a1 SHA-256: dbbd2dc8fb3bfa394857a8cca64f2ba17b50a2c44ca96f67f063fd35a5668674
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. While some links lead to benign Shopify-hosted files, the presence of the malicious redirector and the use of urgency lures indicate a phishing or redirection attempt. The document body itself is heavily obfuscated and appears to contain the malicious redirector URL.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/pify?keyword=cerebrovascular+disease+%25E0%25B8%2584%25E0%25B8%25B7%25E0%25B8%25AD+pdf
    • http://files.paulscottcurtis.com/uploads/1/3/0/8/130813427/1819373.pdf
    • http://xeguwulu.generatebuzz.net/uploads/1/3/0/8/130873791/fajipoterijekodu.pdf
    • http://files.petraviam.com/uploads/1/3/1/8/131871618/fijanurelotupu.pdf
    • http://files.pointofdeparture.pro/uploads/1/3/0/9/130969330/0fd79.pdf
    • http://jixamana.innerbeanaugusta.com/uploads/1/3/0/7/130739664/pemedaguro-sowerupeganal-tesoxatalejew.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/gta_san_andreas_hot_coffe_mode.pdf
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/ffxiv_leveling_guide_1-_50.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/how_to_uninstall_games_from_microsoft_store.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/videsavisosidatixeja.pdf
    • https://cdn.shopify.com/s/files/1/0450/2539/4838/files/beading_patterns.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/agile_scrum_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/93371553997.pdf
    • https://cdn.shopify.com/s/files/1/0434/3096/9511/files/77340875578.pdf
    • https://cdn.shopify.com/s/files/1/0433/9063/2101/files/die_blechtrommel_gnter_grass.pdf
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/11049675462.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kujefitil.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/sucesion_ab_intestato_derecho_romano.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1362/files/1488742057.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off000090e7.bin
a656d83c6ccf2d5e787e8e5fc0c66cea85a976dab13dac344dd88ceed321e9eb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x90E7 12164 bytes
font_00_sfnt_off00006f05.bin
80949f42731e74471e8e26df41d0756cd4621a7989c21468ea26a50b49f268bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F05 5252 bytes
font_01_sfnt_off000080e9.bin
456e8b79e681fd38e6b9315293ef2ea25af600aa7263219fc988efe8eaa57f1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80E9 6180 bytes
font_03_sfnt_off0000b37b.bin
79763a8dc2c99df89e69556b8f02fa4120ce3b99e3d05a11eac83a31ece4e143		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB37B 10020 bytes

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