Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7e298b1f53bc49…

MALICIOUS

PDF

43.1 KB Created: 2020-08-17 11:14:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8029f791623ced58843e93bdeeeda3c9 SHA-1: 0e620f876ef665140b084644eecf0108a02f53bc SHA-256: 4a7e298b1f53bc49472dce47bcc3912d99105d7daf9dffabd455fed6653993d5
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/pify?keyword=aoi+bungaku+series', is flagged as a malicious redirector. The presence of numerous external links, combined with the malicious redirector, strongly suggests a phishing or scam attempt designed to lure users to malicious content. No scripts were extracted, limiting the analysis to the document structure and embedded URLs.

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=aoi+bungaku+series
    • http://files.precisionppe.com/uploads/1/3/2/7/132740637/8540460.pdf
    • http://files.horaianhouse.com/uploads/1/3/0/7/130776714/nidofafal-nividob-pupotafofepu-wabumonu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2408/0282/files/pizigakokowanajara.pdf
    • https://cdn.shopify.com/s/files/1/0434/7147/0742/files/zabuxabamufivuxofugumo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8818/3456/files/celestar_ballista.pdf
    • https://cdn.shopify.com/s/files/1/0428/3724/6118/files/90408673386.pdf
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/los_cascabeles_magicos.pdf
    • https://cdn.shopify.com/s/files/1/0432/7420/7387/files/oral_herpes_simplex_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/joxoxuvurasad.pdf
    • https://cdn.shopify.com/s/files/1/0436/9183/5546/files/76135940175.pdf
    • https://cdn.shopify.com/s/files/1/0435/9441/6290/files/bag_design_by_fashionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/2503/1590/files/litowidax.pdf
    • https://cdn.shopify.com/s/files/1/0438/9961/7448/files/6965211581.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_off00006a6b.bin
e13f03f4556629aac853b55c8ca420cabd524eeb1a21589dbb5f01773f23c89d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6B 5016 bytes
font_01_sfnt_off00007b85.bin
f675c87aa549acd3d87fb0de407293a82aae0604d8d5ec94245e0455559f341c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B85 10980 bytes

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