Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ed3a638317f986…

MALICIOUS

PDF

41.6 KB Created: 2020-08-15 04:53:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 753480c8be4eb63398d09fbb2bc54703 SHA-1: 532d0dfd8124198059400849d4a50ea1cb23b3e5 SHA-256: d4ed3a638317f98628fe8e872b238918d2f0f2df8baddbbc6e6177219817f88c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body and embedded links suggest a lure to download a file related to 'inventory control management excel spreadsheet'. The primary malicious IOC is the redirector URL, which likely leads to further 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=inventory+control+management+excel+spreadsheet
    • http://files.taerus.com/uploads/1/3/1/6/131637606/xulorumikiradalo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7039/7352/files/84391171650.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/agathiyar_mantra_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6686/7362/files/40159345523.pdf
    • https://cdn.shopify.com/s/files/1/0434/1671/5429/files/mamejemawufuvagafaseke.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/37648448925.pdf
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/zifotamiwiralobup.pdf
    • https://cdn.shopify.com/s/files/1/0432/1551/9912/files/44000159530.pdf
    • https://cdn.shopify.com/s/files/1/0428/6860/5095/files/35772957343.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4540/files/fejeguko.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/42905509264.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/akele_h_chale_aao_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/7686/8510/files/introduction_to_statistical_quality_control_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/8051200253.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_off00006395.bin
f9d400ad6550e54d230b757f37911c9baede662f6cc5b15542f147d80b390ebc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6395 5652 bytes
font_01_sfnt_off000076b1.bin
da809c5964d085fc4b87c9df4ad4591e9d9a9716918b6a619322b661177b76e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B1 10128 bytes

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