Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db71c65bdeb28ac…

MALICIOUS

PDF

40.4 KB Created: 2020-08-14 10:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 429ab1884ea8b23461125d68a0923bc6 SHA-1: 061e285cf888e0a8dd73fab8f993b95ab9bb28fd SHA-256: 7db71c65bdeb28ac25d1f7428b2d1d78a5beddbda98a71ac8cf309291f810de5
120 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure related to 'fruit dna extraction lab answers', likely intended to trick users into clicking the malicious link. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on Shopify, which is a common tactic for distributing malicious content disguised as legitimate documents.

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=fruit+dna+extraction+lab+answers
    • http://files.brookeboersma.com/uploads/1/3/1/8/131856100/ripaxo.pdf
    • http://files.noroc.org/uploads/1/3/1/8/131871569/noxebebifavale.pdf
    • http://files.jacquelineperrydesigns.com/uploads/1/3/1/3/131378897/rulasipefuzatap-wizolope-kivumaf-wupagezujekuxu.pdf
    • http://kunum.hawaiicreativemedia.org/uploads/1/3/1/6/131606248/jamure_piberifawekofup.pdf
    • http://files.kinglenatcornerstone.com/uploads/1/3/1/6/131637606/54449a36e72d5.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/72030722440.pdf
    • https://cdn.shopify.com/s/files/1/0436/2423/5170/files/basic_of_c_programming_language_tutorial_filetype.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/kinugusinoxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/5974/7745/files/big_book_of_nursery_rhymes.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/74678345037.pdf
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/risobatomatavitolanefe.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/jomesasilixufep.pdf
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/14316139828.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6491/files/kewugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7542/7735/files/xanomu.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_off0000609c.bin
c573ee863bc0727e1fcc602d02ad6cfebf16acd753dadb27d9f93f169647dfdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x609C 5188 bytes
font_01_sfnt_off00007259.bin
09fad60e29ef3c84b1aacf8cf10db9686294ce2797b10cfc378db555db3a5c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7259 10072 bytes

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