Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f3612dd5133d6c…

MALICIOUS

PDF

37.9 KB Created: 2020-08-13 21:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e0fdeab3bea128a8345c7757c327110 SHA-1: 87415a39dda50af99f32f5b2cdc3b5f9fb8391ce SHA-256: 48f3612dd5133d6c7f8081ec9948b31055e9c92e5361eaa645a06531c0417cfd
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=delta+20+bandsaw+manual'. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on Shopify domains, though many of these appear benign. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure of a "Delta 20 bandsaw manual" to direct 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.ru/pify?keyword=delta+20+bandsaw+manual
    • http://gevowikax.eaglecreeklavender.com/uploads/1/3/1/3/131384771/sibavigavobeduvo.pdf
    • http://figofo.mizzpaw.com/uploads/1/3/1/4/131436967/tixowetisibomi_wewoneguja_pokenerurefeg_kagatuviten.pdf
    • http://files.medwaybaptist.org/uploads/1/3/1/3/131379409/kenomuxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0304/files/kelevalatamexososi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/83999947838.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/kujawil.pdf
    • https://cdn.shopify.com/s/files/1/0447/7042/7031/files/administrao_por_objetivos_livro.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/rijixo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/71029384661.pdf
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/visual_studio_2017_product_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/9998/7873/files/bixibavama.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/64262950603.pdf
    • https://cdn.shopify.com/s/files/1/0432/3626/2052/files/active_and_passive_voice_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/46319404104.pdf
    • https://cdn.shopify.com/s/files/1/0439/5725/6350/files/47857062568.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_off00005332.bin
db895dac23a9adb955c1cfada57f74df0fa2eac8c8f8b4950667b3ea667947c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5332 5380 bytes
font_01_sfnt_off00006572.bin
480b5169fb1ed9645e5617f695f0b7bfd4a03910a27c99e52d5661f40c2eb9f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 10964 bytes

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