Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4b6585d79e13d7…

MALICIOUS

PDF

44.0 KB Created: 2020-08-17 13:14:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fcbab3554ea37c13ccadac76f38a8ca SHA-1: caec5d18492b3600e5293d4bb44f8fba60a5e145 SHA-256: ec4b6585d79e13d7d42deca8dc12ccf3c0018b1ff5a1c1c3c48a732e3f569130
120 Risk Score

Malware Insights

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

The PDF document contains a deceptive title related to new Android phones, likely intended to entice users. It embeds numerous links, including a critical redirector link to 'ttraff.com', which is known malicious infrastructure. The document also features a link farm with many external PDF links, suggesting a SEO poisoning or link distribution tactic. The primary attack vector appears to be directing users to malicious sites via these embedded links.

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=new+android+cell+phones+coming+out
    • http://files.westfieldbouncehouserentals.com/uploads/1/3/1/3/131384789/4605166.pdf
    • http://tufafetu.marleyforch.com/uploads/1/3/0/7/130776031/8c82b423ab4ec88.pdf
    • http://files.southernsideshowhootenanny.com/uploads/1/3/0/7/130739690/jemudejo-nusagetusik-paxorawa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/blame_on_me_layton_greene.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/totavufezexudus.pdf
    • https://cdn.shopify.com/s/files/1/0437/9348/1885/files/sujet_brevet_washington_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/54961478541.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3420/files/69406670957.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/types_of_data_analysis_methods_in_qualitative_research.pdf
    • https://cdn.shopify.com/s/files/1/0454/2988/3048/files/re_authorization_form_download.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_off00006dae.bin
023fa1e1ce5aaa52608566bf0f87569a518d16ea5f5301e2fcbcb58c37fbda44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAE 5548 bytes
font_01_sfnt_off0000806f.bin
38e8e85d5d48b4dae7e4604931cb7399c74a262524c5fd0b81d4595da0795539		 pdf-font-stream PDF embedded font (sfnt) at offset 0x806F 10304 bytes

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