Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a492aa9636ce59…

MALICIOUS

PDF

41.3 KB Created: 2020-08-21 19:27:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e2a604c884dbccc056870d35fd1209f SHA-1: 892c77ef3987f87bd1516cb6d8ad0c8ae8a2f5e3 SHA-256: e9a492aa9636ce5993725e7895bb0b5fc3800b9a724f57c0128c0d7799e21452
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, many pointing to a link farm hosted on Shopify, designed to improve search engine rankings. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=alexa+app+not+working+on+android+p'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect users to malicious content. No scripts were extracted from this sample.

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=alexa+app+not+working+on+android+p
    • http://files.liggettportfolio.com/uploads/1/3/1/1/131164479/fudawarupagosazej.pdf
    • http://zarodix.northraleighpc.org/uploads/1/3/2/6/132681812/37ea5.pdf
    • http://files.innerpiece.nl/uploads/1/3/1/4/131453712/e88da.pdf
    • http://files.bigchipsinvestments.com/uploads/1/3/0/7/130775628/fixakipabodobiwibes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0430/9545/7946/files/sees_behind_trees.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4492/files/home_depot_christmas_tree_prices.pdf
    • https://cdn.shopify.com/s/files/1/0435/7708/2017/files/movies_2019_free_sites.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/vokobapomumubasewonudok.pdf
    • https://cdn.shopify.com/s/files/1/0433/4714/8950/files/brawl_stars_mod_apk_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/kivomifowopugapetedegub.pdf
    • https://cdn.shopify.com/s/files/1/0440/5785/4102/files/dadixokaguwezivitinar.pdf
    • https://forums.androidcentral.com/showthread.php?t=753699&s=e7802edca813dbc2e1f93923088b37c4
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • https://forums.androidcentral.com/showthread.php?t=753699&s=e7802edca813dbc2e1f93923088b37c4
    • 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_off000063f2.bin
3b9440cd297fd5ef94ac8aaa571c0012ced164959054681e025e85ce22e0adcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F2 5160 bytes
font_01_sfnt_off0000759e.bin
e6f2a1d7e4cff1efe2478db68ee16f9175f8d538efe08f323f994250be9eb950		 pdf-font-stream PDF embedded font (sfnt) at offset 0x759E 10168 bytes

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