Malicious PDF — malware analysis report

Static analysis result for SHA-256 ced5b0e092823b04…

MALICIOUS

PDF

36.8 KB Created: 2020-08-12 20:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83541bf0d60533f4c99d59d6d02d838f SHA-1: 701a8b4fea9404d27d3d31df01d9d376992766ca SHA-256: ced5b0e092823b048851b5599d9f2dcaea6744c4f5124629b4080c09a629b3ee
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious link identified is https://ttraff.ru/pify?keyword=multivariate+data+analysis+pearson+new+international+edition+pdf, which is known to lead to malicious infrastructure. The document body itself is heavily obfuscated and contains what appears to be a reference to the malicious URL, suggesting the document's purpose is to facilitate redirection to a harmful site.

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=multivariate+data+analysis+pearson+new+international+edition+pdf
    • http://joseguwom.louisvilleccc.org/uploads/1/3/0/7/130739267/4513056.pdf
    • http://vopizari.westcoastmuddypawz.com/uploads/1/3/0/8/130814328/7a6ed0.pdf
    • http://sotules.zerohourtimes.com/uploads/1/3/2/6/132696158/tozarawezezupilizi.pdf
    • http://files.gdcus.org/uploads/1/3/0/8/130873839/dakira.pdf
    • http://files.unklemikesplace.com/uploads/1/3/1/3/131380915/jawejevulenujo-vevisida-wodurefafin-dololejonozore.pdf
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/89447151941.pdf
    • https://cdn.shopify.com/s/files/1/0430/6334/5301/files/savage_arms_shotgun.pdf
    • https://cdn.shopify.com/s/files/1/0434/3837/5074/files/data_structure_algorithms_tutorial_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0447/9365/9543/files/annex_14_icao.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/btec_level_3_construction_and_the_built_environment.pdf
    • https://cdn.shopify.com/s/files/1/0439/2802/7304/files/97684282333.pdf
    • https://cdn.shopify.com/s/files/1/0439/2956/7387/files/43264206169.pdf
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/ibps_po_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/1100/4821/files/download_from_issuu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2211/3173/files/riesgos_laborales_enfermeria.pdf
    • https://cdn.shopify.com/s/files/1/0436/2646/3392/files/59756446831.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/tirogigo.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_off000050c2.bin
b0466740ccdc9aeca605f521086e4e397d08070c79363bfb4fa4be1872cb4474
pdf-font-stream PDF embedded font (sfnt) at offset 0x50C2 5296 bytes
font_01_sfnt_off000062f8.bin
ca6f805f1844f200a51ac7fdcea4d52d4d77c1599b102d81ddf059ed5adb6838
pdf-font-stream PDF embedded font (sfnt) at offset 0x62F8 10088 bytes