Malicious PDF — malware analysis report

Static analysis result for SHA-256 50f5aa807e644f6c…

MALICIOUS

PDF

45.8 KB Created: 2020-08-06 11:24:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c446072961699fd94db24683d9e34f0 SHA-1: 5ae553b9c9fed0c0cc94e143199c878570ff8d01 SHA-256: 50f5aa807e644f6cdaaebbf1d2f72f46b085815c92e89d90511a7e20b257affe
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/pify?keyword=certificado+de+origen+aladi+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdf'. The document body, though heavily corrupted, contains fragments of these URLs, suggesting a social engineering lure to redirect users to malicious content.

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=certificado+de+origen+aladi+pdf
    • http://files.dubrovnik-coast.online/uploads/1/3/2/6/132682745/fapiwimazelofav.pdf
    • http://files.pdokenya.org/uploads/1/3/0/7/130739697/508771.pdf
    • http://files.congruentangles.us/uploads/1/3/1/8/131856907/laxet.pdf
    • http://files.davecroftphotography.com/uploads/1/3/1/4/131452817/6c76be29.pdf
    • http://files.vicvacuum.com/uploads/1/3/0/7/130775557/merikog.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdf
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/c_vector_of_structs.pdf
    • https://cdn.shopify.com/s/files/1/0434/8801/8598/files/jekupedijogidumiz.pdf
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/zobizovatosuvudo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/54186434186.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/basic_accounting_mcqs_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/87994406858.pdf
    • https://cdn.shopify.com/s/files/1/0435/4863/9391/files/pdf_datasheet_pic16f877a.pdf
    • https://cdn.shopify.com/s/files/1/0436/5264/5017/files/ibps_2020_calendar_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2753/7828/files/jusojuvinuxuguwubowilo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3830/2627/files/tutorials_in_introductory_physics_homework_mcdermott_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/95227244575.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_off00006647.bin
2c255c8cc2262467f849f74efd865db99eda6a8049968dea91f41ab4a5867f92
pdf-font-stream PDF embedded font (sfnt) at offset 0x6647 4956 bytes
font_01_sfnt_off0000772c.bin
8773b86ceaf4a094b8158a1e0bbed2815fc159a4e4443758a6e34eac0d6b8e7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x772C 11420 bytes
font_02_sfnt_off00009c28.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C28 4324 bytes