Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d7aae73e0100ad5…

MALICIOUS

PDF

40.4 KB Created: 2020-08-04 01:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9232fbaaca06c999fc2f34480efbfecf SHA-1: 30c4e37b7428c42753f9630ebb2255360932feee SHA-256: 3d7aae73e0100ad559f201efa818554a900d2e2e8856c9f1d88e44f6e20c4ef0
120 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 link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=nutrition+pdf+ethiopia', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to nutrition and Ethiopia, suggesting a lure to disguise the malicious intent. The presence of numerous links and a malicious redirector indicates a campaign to drive traffic to malicious infrastructure.

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=nutrition+pdf+ethiopia
    • http://files.ericksoneducationalconsulting.com/uploads/1/3/1/8/131856491/7816088.pdf
    • http://files.diypaintguy.com/uploads/1/3/1/0/131069899/pugeroxewaxijetof.pdf
    • http://files.foolsandhorses.ca/uploads/1/3/1/4/131408245/dusifozotuzap.pdf
    • http://files.5thstreetfinancial.net/uploads/1/3/0/7/130739564/8840780.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/ropegasugubawimu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.pdf
    • https://cdn.shopify.com/s/files/1/0438/9843/7787/files/emoji_eye_roll.pdf
    • https://cdn.shopify.com/s/files/1/0435/6145/1681/files/65306954526.pdf
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/texuvemaxevibux.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2392/files/gededobizotilurewija.pdf
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/74589608671.pdf
    • https://cdn.shopify.com/s/files/1/0435/5204/7263/files/dafefukojemuku.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/pitinasibujeti.pdf
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/57742282361.pdf
    • https://cdn.shopify.com/s/files/1/0434/5479/1846/files/32912510598.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_off000061c7.bin
6ed5908e80a221b9982086dad23f241695d92155823c8e9ca7e48aca83f163c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C7 4888 bytes
font_01_sfnt_off0000726b.bin
339e6b7ee6290d7348080c422d13ef66f970c4d3e8d8873e86948bb217c31d24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726B 10228 bytes

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