Malicious PDF — malware analysis report

Static analysis result for SHA-256 be54d2f178372b5b…

MALICIOUS

PDF

37.1 KB Created: 2020-08-18 16:04:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71d8e534ba5a4b203374ac8ea02e5cab SHA-1: 8b154e524523a93a80c2acace666439c64597f4e SHA-256: be54d2f178372b5bbcbd5dadb615b3b5364c9f179ed38de880cf20b62b29ed54
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary link, 'https://ttraff.ru/pify?keyword=cinderella+2015+soundtrack++zip', is designed to lure users into downloading a file. Another embedded link points to 'https://cdn.shopify.com/s/files/1/0448/1315/6514/files/xepej.pdf', which is part of a link farm. The document body, though heavily obfuscated, contains these URLs, reinforcing the malicious intent.

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=cinderella+2015+soundtrack++zip
    • http://files.annemcarthur.com/uploads/1/3/0/8/130874086/mulirelegubufejixe.pdf
    • http://files.nonreligiousspiritual.com/uploads/1/3/0/8/130813409/5ebaadbb65d0.pdf
    • http://files.soarohio.org/uploads/1/3/1/4/131406629/9911393.pdf
    • http://files.ginkgotree-advisors.de/uploads/1/3/0/7/130739415/eef2b3a.pdf
    • https://cdn.shopify.com/s/files/1/0448/1315/6514/files/xepej.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0486/files/black_circle_emoji.pdf
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/group_incentive_plans.pdf
    • https://cdn.shopify.com/s/files/1/0454/7844/5206/files/pan_card_acknowledgement_slip_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9206/files/doxekonopete.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/lugeje.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/46052490192.pdf
    • https://cdn.shopify.com/s/files/1/0431/7249/5524/files/33814559166.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/gesadigewatorimorezumibul.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_off000050c2.bin
7abc15ab57ff995a4cc38af27a91d76fd70fc268e072061db71787201d044b13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50C2 5536 bytes
font_01_sfnt_off000063ac.bin
6664cfdee280de49292b72baf6c3703172c97211ac1c069fd3f2093ad909d2af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63AC 10528 bytes

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