Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b2a2b5e0f8a46f9…

MALICIOUS

PDF

46.2 KB Created: 2020-08-31 08:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de695f1235700f699b82627fba8b5aa8 SHA-1: b58b8adb30f93861c5759ecb4170006997df5162 SHA-256: 6b2a2b5e0f8a46f9363ce49a963d4a9756a211e2cfb1f54002f794f0cdc27007
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and a reference to 'Godfather of Harlem', suggesting a lure. The presence of numerous PDF links, many pointing to benign Shopify URLs, indicates a potential link farm or SEO manipulation tactic to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=godfather+of+harlem
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/0067/6003/files/zafuvomebomomuzavabaxamo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nitopufekuriwuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/damned_chuck_palahniuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2264/files/twitter_video_pc.pdf
    • https://cdn.shopify.com/s/files/1/0433/0635/2804/files/speaking_test_preparation_pack_for_cambridge_english_proficiency.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62894204366.pdf
    • https://cdn.shopify.com/s/files/1/0461/1227/6644/files/kafatusurupomurime.pdf
    • https://cdn.shopify.com/s/files/1/0431/6302/5567/files/95761131567.pdf
    • https://cdn.shopify.com/s/files/1/0431/1308/7142/files/7933316142.pdf
    • https://cdn.shopify.com/s/files/1/0432/9275/4076/files/android_device_manager_apk_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0440/5959/0806/files/wuzinut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3495/files/complete_champion.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/publicity_and_public_relations_in_marketing.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/9853519113.pdf
    • https://cdn.shopify.com/s/files/1/0432/1063/7476/files/machine_gun_car_horn.pdf
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/71055188302.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/90379815049.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f32.bin
ee6cbb26cbdddb6e2a8e788522d62f6c391b665f7ed027ce7b39f4e9bc576501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F32 5000 bytes
font_01_sfnt_off00008013.bin
a3da88a269c746f87d07a9a8c3662bacc20a8ff9e0b229c5285f611fa22516aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8013 14088 bytes

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