Malicious PDF — malware analysis report

Static analysis result for SHA-256 5645d97c82bf064a…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 03:20:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e72cdae099eb90f9bd99f0d5aeace127 SHA-1: 0df84702d0fd5f2e7290e9b4672e9dd82c115ddb SHA-256: 5645d97c82bf064a0ededb40e4c611e7a1a047e1d9511c10f518fb58f930b6a5
142 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific URL pointing to a redirector, indicating a malicious intent to direct users to potentially harmful content. The document body, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=southwest+carry+on+guidelines', suggesting a lure related to airline policies to entice clicks. The presence of numerous PDF links further supports the link farm heuristic, aiming to distribute traffic or host malicious content across multiple domains.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=southwest+carry+on+guidelines
    • http://files.cloakanddaggerdc.com/uploads/1/3/1/4/131410234/7d300.pdf
    • http://files.northeastglobalmissions.com/uploads/1/3/1/0/131071067/66c089.pdf
    • http://files.charlestonpalmettopediatrics.com/uploads/1/3/2/6/132681062/853e208b44f.pdf
    • https://cdn.shopify.com/s/files/1/0433/8712/5927/files/juvebewejijikamegamevo.pdf
    • https://cdn.shopify.com/s/files/1/0441/3489/1672/files/edge_barracuda_buggy_plans.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5316/files/20308622443.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/kuselixawidedub.pdf
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/76060474653.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/78515560782.pdf
    • https://cdn.shopify.com/s/files/1/0434/8080/9622/files/vovenakavazug.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/werewoxanisosolukefajapi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/41036588397.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/bimoxelovetelinuxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4673/files/73654383187.pdf
    • https://cdn.shopify.com/s/files/1/0438/9719/2603/files/sawomonifajinoro.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_off000060d2.bin
208b9de0f1416bb103f03bf58fb332903a8f5f0534a1d3006b4498aad9fcabb6
pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 5500 bytes
font_01_sfnt_off00007391.bin
80f21d7e41c24afd0af7471613fd0d89b2bbcf7c7ebb3a9699fb176a814b4450
pdf-font-stream PDF embedded font (sfnt) at offset 0x7391 10544 bytes