Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5910f7f7f025b6a…

MALICIOUS

PDF

56.0 KB Created: 2020-08-09 21:31:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa463d9af79a638e079276ef5e463439 SHA-1: 1dac07ac7cccec66c9c8b81867dc03821da7eb8b SHA-256: e5910f7f7f025b6aab37a2611d26535b5e65134c4e4b532ee17091f83fe8893f
150 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous external PDFs, with one primary link identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=alfabeto+hebreo+completo+pdf', which is flagged as a malicious redirector. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=alfabeto+hebreo+completo+pdf
    • http://lamelotag.xandermorgan.net/uploads/1/3/0/8/130814328/8165846.pdf
    • http://files.baileykidsmusicals.com/uploads/1/3/0/7/130775275/fd76a9256b224.pdf
    • http://files.thebeautybarracuda.com/uploads/1/3/0/7/130739163/runobabadi_lujazuxexilere_labolakarenev.pdf
    • http://files.vantaggiohair.com/uploads/1/3/1/4/131409200/4794777.pdf
    • https://cdn.shopify.com/s/files/1/0436/2049/9620/files/fivarobupibupagedazitiku.pdf
    • https://cdn.shopify.com/s/files/1/0435/0178/1156/files/refalez.pdf
    • https://cdn.shopify.com/s/files/1/0431/7092/2655/files/79515504272.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/wosimanitela.pdf
    • https://cdn.shopify.com/s/files/1/0431/4647/7722/files/dynamic_stretching_for_runners.pdf
    • https://cdn.shopify.com/s/files/1/0438/9391/5800/files/zevejilukimimuwufuliv.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/lexigesezulolomituzene.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/1242911004.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/50961669262.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/xizifefekawuvulod.pdf
    • https://cdn.shopify.com/s/files/1/0437/6592/3997/files/97600061669.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/pilonepoxefenobusuvepap.pdf
    • https://cdn.shopify.com/s/files/1/0431/9795/6258/files/mivadofilofajarif.pdf
    • https://cdn.shopify.com/s/files/1/0430/6403/3429/files/lusakixejerubutelasi.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_off00007391.bin
300fdb57ebc455aa38c849db9f8cc43ff85476cc9308d94ed8f29770220ec4b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7391 4980 bytes
font_01_sfnt_off0000847a.bin
281d728b04ebe7f64686fe4d205d87799189039edb53ff3b62c77293c6cafa92
pdf-font-stream PDF embedded font (sfnt) at offset 0x847A 22232 bytes
font_02_sfnt_off0000c4e1.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E1 4324 bytes