Malicious PDF — malware analysis report

Static analysis result for SHA-256 997a32232ce23615…

MALICIOUS

PDF

45.1 KB Created: 2020-08-23 03:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f98fff3796a45dd30bcbd353c924963 SHA-1: fad87d505b26498ef0ce88cc7eda17c7096cf9d3 SHA-256: 997a32232ce23615e6d8180669db87f58d5a1848ea00ce0cd226e6ed8a26c094
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=elsevier+journal+template+2017'. The document body, though heavily obfuscated, contains this URL and references to academic templates, indicating a lure to a malicious site. No scripts were extracted from this sample.

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/pify?keyword=elsevier+journal+template+2017
    • http://files.eepto.com/uploads/1/3/0/7/130739069/megawewofix-gafusemiluga-supogikatufew.pdf
    • http://bowofewiz.molisereview.com/uploads/1/3/0/8/130874254/rubexex-wibagabewozoru-togove.pdf
    • http://files.allegrezzasingers.com/uploads/1/3/0/8/130873822/1f851d.pdf
    • http://xofukuxe.allanenv.ca/uploads/1/3/0/9/130969633/3830135.pdf
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/kisobipujisit.pdf
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/xotuvajosem.pdf
    • https://cdn.shopify.com/s/files/1/0434/4804/1637/files/adverb_worksheets_for_5th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/how_far_away_do_mobs_spawn.pdf
    • https://cdn.shopify.com/s/files/1/0462/4675/6506/files/25840480122.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49726552648.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/goat_herd_management_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/94409348752.pdf
    • https://cdn.shopify.com/s/files/1/0448/8128/1191/files/religious_fundamentalism_causes_and_effects.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063fa.bin
bbc5bbb455612db994506b94c9a85ea12e3d00c28a01e9acf585f92e07961adc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FA 5344 bytes
font_01_sfnt_off0000761b.bin
197715f8e6db42703d643a2ab015d9548d9f58e5b90172387968213ed313b268		 pdf-font-stream PDF embedded font (sfnt) at offset 0x761B 10468 bytes
font_02_sfnt_off000099c8.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99C8 4324 bytes

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