Malicious PDF — malware analysis report

Static analysis result for SHA-256 a80ebc68e3f8c4e8…

MALICIOUS

PDF

35.5 KB Created: 2020-08-13 15:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40edfd27946db6178f4418e20de54c98 SHA-1: dd9a6ab2bc059bbd53a913b3c5c6247b9c8b0e0a SHA-256: a80ebc68e3f8c4e830e465374aabde7145946f4c4dd38b3f5aa07e107184cd4a
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as "vegetables images pdf", with one link pointing to a known malicious redirector. The primary purpose appears to be directing users to malicious infrastructure via a link farm. 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.com/pify?keyword=vegetables+images+pdf
    • http://files.southlandfamilyclub.com/uploads/1/3/1/3/131379371/e862cb.pdf
    • http://files.harmonautoinsurance.com/uploads/1/3/1/4/131437229/wuzofurijemepimuse.pdf
    • http://bepon.luxlivingcandles.com/uploads/1/3/2/6/132681352/b5dacc68246529f.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/dutemozatevugulixumu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5461/1102/files/38238285602.pdf
    • https://cdn.shopify.com/s/files/1/0439/3294/2504/files/bebexudusanorawenaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9204741539.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1591/files/augmented_reality_in_construction.pdf
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/air_pollution_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0436/3363/9584/files/causes_of_emotional_and_behavioral_disorders.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/47576309112.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/15100099104.pdf
    • https://cdn.shopify.com/s/files/1/0428/3806/5308/files/89390291179.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4470/files/51482972075.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/14760769942.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/mafipekuzuzekadofexi.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_off00004cc2.bin
4d0c4a852da918eee711f690492a13bd8aa8cf409a872b8d42f45134ee3ac5fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CC2 5368 bytes
font_01_sfnt_off00005ef8.bin
1f31fa9d4d9035ebae7ea1524861ae3c68904d1c79d7c3737f96b12808f0122c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF8 10104 bytes

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