Malicious PDF — malware analysis report

Static analysis result for SHA-256 da6483aea1442c2d…

MALICIOUS

PDF

41.2 KB Created: 2020-08-20 05:58:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66deaa4e1bfef898d9264a2a111c43a3 SHA-1: 0f79a1a2eefdc96b5ff008ea6ce530955104692e SHA-256: da6483aea1442c2df069d11c7516ce93f0e68598e3255316c6325a2e91b3344f
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'Kelantan tourism guide' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a mass external PDF link farm further indicates 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=kelantan+tourism+guide
    • http://files.cspo-watch.com/uploads/1/3/1/3/131380729/jimar.pdf
    • http://vupiv.foxfieldrecoverymission.org/uploads/1/3/2/3/132302868/kanipuwubug.pdf
    • http://files.jovaunholmes.com/uploads/1/3/0/8/130873973/818c81.pdf
    • https://cdn.shopify.com/s/files/1/0436/9160/6170/files/ancestral_guardian_barbarian.pdf
    • https://cdn.shopify.com/s/files/1/0432/5572/6238/files/caracteristicas_del_aprendizaje_colaborativo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/49846725861.pdf
    • https://cdn.shopify.com/s/files/1/0431/7977/0019/files/50785640120.pdf
    • https://cdn.shopify.com/s/files/1/0433/0822/0574/files/larizorisibo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/25978881176.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/vivah_film_movie.pdf
    • https://cdn.shopify.com/s/files/1/0432/4383/1458/files/bifiwifefojujowodimeno.pdf
    • https://cdn.shopify.com/s/files/1/0439/1786/9211/files/52601268116.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/nisutizuv.pdf
    • https://cdn.shopify.com/s/files/1/0455/7815/8245/files/kowogomamarosobup.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/valisefevirakezabosito.pdf
    • https://cdn.shopify.com/s/files/1/0429/6025/7177/files/sbi_online_net_banking_form.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_off000064d3.bin
7835298d5e65379210a99befb308b12337b65ecaf99ab9f2f9f213796159574d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D3 5112 bytes
font_01_sfnt_off00007620.bin
b3d86f1466d0a194f782ba30a73d6b02c2825040e43f0350e17c71be8be1a988		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7620 9980 bytes

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