Malicious PDF — malware analysis report

Static analysis result for SHA-256 3688e561cedfc552…

MALICIOUS

PDF

43.7 KB Created: 2020-07-31 03:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 467fd72e5a97fde1c49afaba1ec04711 SHA-1: 60d8359ebd1d2990b15b035eb6fdeff32c31a301 SHA-256: 3688e561cedfc552a3753eb4bb528edd4978b5bf27f7b650d30384342d99e65a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=actual+size+book+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'Actual size book pdf'. The combination of these factors indicates a malicious intent to redirect users to harmful content.

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=actual+size+book+pdf
    • http://files.deepintheheartcrafting.com/uploads/1/3/0/7/130775698/fozavamapafatij.pdf
    • http://files.thaihoneymoons.com/uploads/1/3/0/8/130814353/renumurub-janarekog-lafobodobe-lixeru.pdf
    • http://files.kimcollinsflute.com/uploads/1/3/0/7/130775084/3043794.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96258555683.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/lisofitipuzevimazajat.pdf
    • https://cdn.shopify.com/s/files/1/0435/4772/1892/files/85888579803.pdf
    • https://cdn.shopify.com/s/files/1/0431/9949/6351/files/75066746994.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/13563284634.pdf
    • https://cdn.shopify.com/s/files/1/0432/7161/8723/files/25546258520.pdf
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/56107960618.pdf
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/dewepobadufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/18587498626.pdf
    • https://cdn.shopify.com/s/files/1/0439/9949/4302/files/30785003863.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdf
    • https://cdn.shopify.com/s/files/1/0440/9724/1240/files/mevexajurajonerikeje.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/
    • https://cdn.shopify.com/s/files/1/0431/9949/6351/files/750667469

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aed.bin
80051b57489696ffc92f4431fb31175f1adb8ccc582a8622034ac7c5f042bdc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AED 5072 bytes
font_01_sfnt_off00007c3a.bin
c0eebb49a0d5da66c966c98e067e368aa6a839a12a0aa7379461c9675184e020		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3A 10596 bytes

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