Malicious PDF — malware analysis report

Static analysis result for SHA-256 271b0b1fdb31d036…

MALICIOUS

PDF

51.2 KB Created: 2020-08-09 01:39:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab3e1896ee1918612323395a44373962 SHA-1: 4b6349543385c790b2bd48ef2f666c7b1bb46dde SHA-256: 271b0b1fdb31d03669aca36cc744c93df3b438a98303a6a2600518f6e63abd08
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links to external resources, with a primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL, suggesting an attempt to disguise malicious content as a technical document. The presence of a link farm heuristic further indicates a potential SEO manipulation or phishing campaign.

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.com/pify?keyword=arduino+mega+caracteristicas+pdf
    • http://files.kiweehealth.com/uploads/1/3/1/8/131871622/f388395401.pdf
    • http://files.journeythroughsurrogacy.com/uploads/1/3/1/6/131636807/zuwen_ladikukamegu_jisaduroxo.pdf
    • http://files.juliner.com/uploads/1/3/0/8/130813317/7073305.pdf
    • http://files.migrocers.com/uploads/1/3/1/4/131409210/rabisisumur_losabivupek_towoxagur.pdf
    • http://files.agendaforchildrenost.org/uploads/1/3/1/4/131437736/3265976.pdf
    • http://files.journeythrou
    • https://cdn.shopify.com/s/files/1/0431/4542/9160/files/71906848082.pdf
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/soda_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/7751/0055/files/calculus_by_howard_anton_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0454/6474/8184/files/lista_de_adverbios_de_lugar_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/68591208719.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/occurrence_of_actinides.pdf
    • https://cdn.shopify.com/s/files/1/0452/2855/6445/files/alcanos_ramificados_ejemplos.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/xaligimujenijeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/7060/3932/files/manacher_s_algorithm_python.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/88218700125.pdf
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/zarefuratewasiladiguw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1751/files/gcse_biology_revision_questions_and_answers.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_off0000710a.bin
76f152bcdfa620781a4b309c413c5a5e0198942c6fa5477b201bd767b5fff732
pdf-font-stream PDF embedded font (sfnt) at offset 0x710A 5432 bytes
font_01_sfnt_off0000836b.bin
c1c8f9fade124a8a731dcf7eeaedd289a316b975b272b1e16b707bc7ba5f304c
pdf-font-stream PDF embedded font (sfnt) at offset 0x836B 9948 bytes
font_02_sfnt_off0000a5b8.bin
62592edb386ded1bbfe3ad176abaa9c49759de4fcc4f1cb42fcaf8336976d7ed
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5B8 17508 bytes