Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d5c44b06e28e47…

MALICIOUS

PDF

48.4 KB Created: 2020-08-14 10:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e2e3b192c5847a92b07ec717da237e6 SHA-1: 6e07555b691b9979477c29a7d9071b02446f9ba5 SHA-256: 45d5c44b06e28e4756adbfb5a342678c99801791d58e26aa877a69a5ab9d657e
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with one primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and numerous other links hosted on Shopify, likely to appear legitimate. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure.

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.ru/pify?keyword=humming+chorus+sheet+music
    • http://files.pressprooflabels.com/uploads/1/3/2/3/132303017/5865908.pdf
    • http://files.ermineskincommunity.ca/uploads/1/3/1/3/131379692/ninutoluve.pdf
    • http://files.passport2pain.com/uploads/1/3/0/7/130738701/kerigidixobu-tokumurupoj-jofamabum.pdf
    • http://files.donamarafriedman.com/uploads/1/3/1/4/131437666/1009463.pdf
    • http://files.hockeyatlas.net/uploads/1/3/0/9/130969939/5659749.pdf
    • https://cdn.shopify.com/s/files/1/0431/7705/0272/files/17922445915.pdf
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/tera_nova_practice_tests.pdf
    • https://cdn.shopify.com/s/files/1/0431/6879/2733/files/banekiwanizonujotew.pdf
    • https://cdn.shopify.com/s/files/1/0437/5809/2439/files/79568163634.pdf
    • https://cdn.shopify.com/s/files/1/0435/2176/9627/files/51558990969.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9588/files/23585601044.pdf
    • https://cdn.shopify.com/s/files/1/0432/4179/9843/files/coleman_powermate_1850.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/84202852476.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/balanitis_bacteriana.pdf
    • https://cdn.shopify.com/s/files/1/0437/3161/5909/files/giweledo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2503/8497/files/puvikonol.pdf
    • https://cdn.shopify.com/s/files/1/0445/4429/5076/files/alice_cooper_poison_tab.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/82338066462.pdf
    • https://cdn.shopify.com/s/files/1/0449/9632/9636/files/21715005295.pdf
    • https://cdn.shopify.com/s/files/1/0437/1592/0024/files/viwelopodumu.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_off00006461.bin
502ddcdff35801d52b82b23ee671b90cf228b6cb35d0fe966842923435a84143
pdf-font-stream PDF embedded font (sfnt) at offset 0x6461 4812 bytes
font_01_sfnt_off00007487.bin
0a10258356539009ea7ece39b72199ac1499b3f0eaa9f37aa789b56c88943d92
pdf-font-stream PDF embedded font (sfnt) at offset 0x7487 15376 bytes
font_02_sfnt_off0000a453.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA453 4324 bytes