Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b2dd273948a517c…

MALICIOUS

PDF

49.3 KB Created: 2020-08-24 06:12:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79608f46b3fce43a10fe1fa26cefde14 SHA-1: 0b9cbaaa9953c866fd8494c7647ae4be676477fc SHA-256: 8b2dd273948a517c04a7c186c21c7ef770aeea4d44640c585b8eb375eb182cac
120 Risk Score

Malware Insights

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

The PDF file contains a lure referencing "Maplestory training guide 2019" and embeds a large number of external links. One of these links, https://ttraff.com/pify?keyword=maplestory+training+guide+2019, is identified as a malicious redirector. The document body also contains obfuscated text and multiple URLs, many hosted on Shopify, which are likely part of a link farm to improve search engine ranking for the lure. No scripts were extracted, and the primary malicious activity appears to be directing users 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.com/pify?keyword=maplestory+training+guide+2019
    • http://files.whiteeagleglobalsolutions.com/uploads/1/3/2/6/132680907/5618379.pdf
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/bodopexi.pdf
    • https://cdn.shopify.com/s/files/1/0446/3496/4131/files/gate_aptitude_questions_and_answers_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/business_proposal_cover_letter_sample.pdf
    • https://cdn.shopify.com/s/files/1/0430/9090/3193/files/vigidixitofatineme.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8032/files/doviw.pdf
    • https://cdn.shopify.com/s/files/1/0436/9799/5941/files/godibikiramu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/vapug.pdf
    • https://cdn.shopify.com/s/files/1/0433/6638/3770/files/how_to_disconnect_messages_from_mac.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6582/files/8236602672.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_off0000608f.bin
a0e178afe3f6bc21c1fa552a2880aa8b801dc3549ffcc118b27384bb03512a68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x608F 5716 bytes
font_01_sfnt_off0000741f.bin
a4eda3429e681d2c1c0de70a6a9afded98528f38d796377673635b1fc446a0d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741F 14804 bytes
font_02_sfnt_off0000a1d8.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1D8 16092 bytes

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