Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3126ef935a10382…

MALICIOUS

PDF

44.7 KB Created: 2020-08-16 14:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63b70fe78a0439cdf102df0a392f3feb SHA-1: f463304d417f45a8a69759684d9d39ad675ec1ea SHA-256: e3126ef935a103828831384dc4074c26ad8ce3bd9284fa01d854f746a999a97f
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This suggests the document's primary purpose is to trick users into visiting the malicious URL, likely for further exploitation or credential harvesting.

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=arcsoft+photostudio+6+free
    • http://files.lovemehemp.com/uploads/1/3/0/7/130739028/26ee30d8a8.pdf
    • http://files.playsmart.co/uploads/1/3/1/4/131437418/26e027b341.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/79315341335.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/birovej.pdf
    • https://cdn.shopify.com/s/files/1/0430/1189/9545/files/wobefotuni.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/nodubinubudegiz.pdf
    • https://cdn.shopify.com/s/files/1/0436/8308/6489/files/pixobiwavif.pdf
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/10724781489.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/zobibe.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/55638886915.pdf
    • https://cdn.shopify.com/s/files/1/0432/4537/1549/files/25860176164.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3042/files/madea_plays_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0448/1895/6448/files/story_of_davidito.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_off00006323.bin
5d49dc60d25da0e6ca223329f2cd8e8741feda0e30a1af1bfc7c3fb0cb99bb03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6323 4920 bytes
font_01_sfnt_off000073ef.bin
e0ca5d77885e5e1a36f940be29002c6c31d0b7edb81913348fa755f3c4a330ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73EF 10604 bytes
font_02_sfnt_off0000982e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x982E 4324 bytes

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