Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2613eec3dd21384…

MALICIOUS

PDF

42.5 KB Created: 2020-08-06 15:37:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee2187e78abcf5583e6f4f3fb093cdbb SHA-1: 63fc81536e128e033deb6d8ed137071d8437b276 SHA-256: f2613eec3dd213847aa23b3d182e8a5cd419e9399c340745cf99201bab1d3be8
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to increase visibility. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms a malicious intent to lead the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/pify?keyword=world+map+geographical+pdf
    • http://files.thefinishdepot.com/uploads/1/3/0/7/130740252/duzevepi.pdf
    • http://zowezefo.myhealthcoachusa.com/uploads/1/3/0/7/130776208/dajigotolun_luziw_fidov.pdf
    • http://lakovi.dixiemacuisdin.com/uploads/1/3/1/0/131070581/329057.pdf
    • http://files.marcushoffman.com/uploads/1/3/0/9/130969371/b8c3a6a2a7.pdf
    • http://files.adishsingh.com/uploads/1/3/1/3/131380471/xudexexono_nubemijadef.pdf
    • https://cdn.shopify.com/s/files/1/0433/6526/9669/files/learn_spanish_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0440/8950/7990/files/51031518805.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0082/files/dosogaxutedizikago.pdf
    • https://cdn.shopify.com/s/files/1/0436/4229/0336/files/4_team_double_elimination_bracket.pdf
    • https://cdn.shopify.com/s/files/1/0437/8158/7093/files/gutuzoxixanugakabixoda.pdf
    • https://cdn.shopify.com/s/files/1/0438/4748/3552/files/92869779556.pdf
    • https://cdn.shopify.com/s/files/1/0430/5590/6970/files/36467185059.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/36789854767.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/gejaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/5021/2264/files/caterpillar_generator_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/hp_designjet_t120_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/zigituvesotujotugok.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/impact_of_human_activities_on_environment_essay.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_off000068df.bin
1be6b15680fd24938c3773201dd1b6a6571cb989147db1eb80819d582cd10191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DF 5404 bytes
font_01_sfnt_off00007b23.bin
ecf59aa05daee1b1271762c1831f28f6ebb083a7d23b2e87d12624b4905d46b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B23 9888 bytes

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