Malicious PDF — malware analysis report

Static analysis result for SHA-256 99998fe7211c3ee7…

MALICIOUS

PDF

61.6 KB Created: 2020-08-18 15:23:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5edbeffb49b7a4ae9544d3ea8dc4a85c SHA-1: caf71b5038bb20912708c76a3e8b18d223b18556 SHA-256: 99998fe7211c3ee7d2e78cbf928741dfbd179a3cf5c616c0593b64a8d879cb0a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same URL and a lure related to 'email format for applying maternity leave'. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute 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=email+format+for+applying+maternity+leave
    • http://kopotumo.uhsmini-thon.com/uploads/1/3/2/6/132695569/meseza_xawepuziz_juxadolijakesu_zadukurujogod.pdf
    • http://lepujodep.jonahkatz.com/uploads/1/3/1/4/131437657/fivewumoxixidew.pdf
    • http://files.roxannesmith.ca/uploads/1/3/1/1/131164479/8183759.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/wedoxeferoxofuwaxaveju.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8280/files/63428203207.pdf
    • https://cdn.shopify.com/s/files/1/0436/1748/4957/files/villa_borghese_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/8732/2522/files/35836682519.pdf
    • https://cdn.shopify.com/s/files/1/0440/4995/7029/files/26992745372.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/xovudulokinixikunijizize.pdf
    • https://cdn.shopify.com/s/files/1/0441/2679/7976/files/virtual_assistant_proposal_sample.pdf
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/72506371488.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/47719272299.pdf
    • https://cdn.shopify.com/s/files/1/0448/2659/1389/files/juravabidozidenaxovap.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aade.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAADE 2828 bytes
font_01_sfnt_off0000b4d8.bin
aca37c3800d78e0f1c12cb235a40178c75543648db46cda586c2e1ff88000ac4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D8 5160 bytes
font_02_sfnt_off0000c668.bin
0d4a2f7e18bd9688fb7721a3ff7ff4b21494f77c824ae762b7d560e39ecdd1f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC668 10120 bytes

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