Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6eda004dfd392d0…

MALICIOUS

PDF

80.1 KB Created: 2020-08-10 22:54:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7955cc00eaa157960007b3b196bb9d3 SHA-1: 3923f691f400a3ac7eebdac074de55fd93c5866e SHA-256: b6eda004dfd392d07f8738c159db3511b82000d699e5f5b9ac1f38e01a13fcd3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=imc+business+plan+book+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting a social engineering attempt to trick users into downloading a file under the guise of a business plan. No scripts were extracted from this sample.

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=imc+business+plan+book+pdf
    • http://files.riamccaw.net/uploads/1/3/0/7/130739251/wulirufe.pdf
    • http://files.westfieldbouncehouserentals.com/uploads/1/3/1/3/131384789/4605166.pdf
    • http://files.immanuellutheran-sterling.com/uploads/1/3/0/8/130873893/54849390.pdf
    • http://files.remotesensinglab.org/uploads/1/3/2/7/132740375/xagutofanikekus.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/suniju.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/foxekopagekivupow.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/25988906579.pdf
    • https://cdn.shopify.com/s/files/1/0447/4689/9607/files/control_f_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/6302/5567/files/gigozuvabubiga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevebetivegukubevam.pdf
    • https://cdn.shopify.com/s/files/1/0450/4931/5478/files/wasufapufokasu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4786/1923/files/auto_repair_manuals_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/0088/7456/files/jejotaniduwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/tinefojefebivawumipudula.pdf
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/anova_test_in_spss.pdf
    • https://cdn.shopify.com/s/files/1/0431/5706/1788/files/53190730006.pdf
    • https://cdn.shopify.com/s/files/1/0434/0904/7717/files/82638507421.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_off0000f22f.bin
725bea85461c48bf44db7686ee7324dae25232a2bb06da244df4e5ab078e61f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF22F 5148 bytes
font_01_sfnt_off0001038f.bin
59b1b951c77e4a8d458d4059845085bf9e87f57c542f2d3f62bb8740fe42b1c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1038F 9824 bytes
font_02_sfnt_off00012504.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x12504 4324 bytes