Malicious PDF — malware analysis report

Static analysis result for SHA-256 d015be50f07203fc…

MALICIOUS

PDF

61.3 KB Created: 2020-08-07 20:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 968adb7ff38a83da7b0168efcd4fcc3a SHA-1: a64b2a08058c386136da5f250225cbc29a90e32c SHA-256: d015be50f07203fc422be62b0ef2b9a1c4d9f4699e8c5e32e267c590277d4cd6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a string that appears to be a lure related to 'Auckland transport code of practice pdf', which is likely intended to trick users into clicking the malicious link. The presence of numerous PDF links suggests a broad phishing or spam campaign.

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.cc/pify?keyword=auckland+transport+code+of+practice+pdf
    • http://files.michaelsalomone.com/uploads/1/3/2/8/132814949/2433556.pdf
    • http://files.stephaniehays.com/uploads/1/3/0/8/130874347/855b0a0270bd6d.pdf
    • http://files.armosaics.com/uploads/1/3/0/8/130813904/5425042.pdf
    • http://files.principaldonacarney.com/uploads/1/3/0/9/130969671/kisibaxazevezamisom.pdf
    • http://files.metatalkcafe.com/uploads/1/3/1/4/131454586/woxifu-tebufepuf-gobetuwo-vudapi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/61303888641.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7108/files/free_online_books_download_sites.pdf
    • https://cdn.shopify.com/s/files/1/0435/3828/4696/files/tefokanu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/53182595246.pdf
    • https://cdn.shopify.com/s/files/1/0433/7981/8661/files/kirazadurenazibasujoriz.pdf
    • https://cdn.shopify.com/s/files/1/0428/0378/9991/files/25475911266.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/dream_allegory.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/35619226847.pdf
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/20493308995.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/how_to_scroll_in_discord.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_off0000b43b.bin
8694b0dce68f81e4c6f4b15b84416f78edbc3109b715090eb627b5e5ada20b46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB43B 5200 bytes
font_01_sfnt_off0000c601.bin
edf206cafb0866f6fa42819339a417b5d3d61c96c98e049893622857e1f09771		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC601 10008 bytes

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