Malicious PDF — malware analysis report

Static analysis result for SHA-256 381e73532a0bbd54…

MALICIOUS

PDF

54.5 KB Created: 2020-08-01 06:24:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e67f733b230fd28ece95d9e2ed37c7c SHA-1: 406bdcfabf669be8f347c2291072ba83461f2c05 SHA-256: 381e73532a0bbd540232a9780274e4959b789b1b139a63e06ec5fb385699d3ee
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=count+items+in+list+python' which is flagged as malicious. The presence of numerous external PDF links suggests a link farm or a method to distribute further malicious content, aligning with SEO manipulation tactics.

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=count+items+in+list+python
    • http://files.javakhkservice.com/uploads/1/3/1/6/131607063/sovatevijofaj.pdf
    • http://files.dreamingtreephotomn.com/uploads/1/3/0/8/130814397/xagizewire.pdf
    • http://files.lifeword.nl/uploads/1/3/0/7/130775368/foruf_gukejiwi.pdf
    • http://files.gene-switch.eu/uploads/1/3/2/6/132695556/9537323.pdf
    • http://files.hairandmakeupbyalicia.com/uploads/1/3/0/9/130969310/6907172.pdf
    • https://cdn.shopify.com/s/files/1/0431/7803/3303/files/10653959390.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/kagemu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/88113129958.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/4646748451.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/fatuwojutaledodure.pdf
    • https://cdn.shopify.com/s/files/1/0435/9153/2699/files/74941060860.pdf
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/fofadagaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/6009/2309/files/83144070910.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/jimogenuranelo.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/nivajatumiberumi.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_off00007687.bin
5cafbdd285d0f1c85ba888b1e2c0993e4bb89e3fa2929312b6a0cccf9d935a3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7687 4760 bytes
font_01_sfnt_off00008693.bin
895fc4e97a48c87df2a37b8650b0229432dcc9fad694405e8ffcd420055c403a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8693 15380 bytes
font_02_sfnt_off0000b729.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB729 16312 bytes

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