Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0a15363dfba0b0…

MALICIOUS

PDF

55.1 KB Created: 2020-08-10 07:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cd14bdd95ec1ae8f83db429fb9fce61 SHA-1: 44b288f24f6a18f7bd63e60d2a15e8645661aba1 SHA-256: 1c0a15363dfba0b063397646939782c859399a2e52560e32876dc678225aeb4f
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 external PDF files hosted on various domains, including a suspicious redirector at 'ttraff.ru'. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic to malicious sites. The presence of a known malicious redirector strongly suggests a phishing or malware distribution attempt.

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=acuerdos+de+basilea+iii+pdf
    • http://neninumid.steampunkgalalondon.com/uploads/1/3/1/4/131437601/0e21a97a.pdf
    • http://sulowel.pilatesexcellence.com/uploads/1/3/1/6/131636612/7734901.pdf
    • http://files.mickallencht.com/uploads/1/3/0/8/130874104/80408eb5.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9588/files/rezizumegukakexozajexe.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/61488455630.pdf
    • https://cdn.shopify.com/s/files/1/0433/7886/8387/files/b._f._skinner_theory.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tifomev.pdf
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/19455757722.pdf
    • https://cdn.shopify.com/s/files/1/0435/6230/3637/files/types_of_bakery_products.pdf
    • https://cdn.shopify.com/s/files/1/0437/2211/3192/files/lifazenidenisanelozog.pdf
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/2252196290.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/93463649867.pdf
    • https://cdn.shopify.com/s/files/1/0438/3493/3408/files/dictionary_german_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.pdf
    • https://cdn.shopify.com/s/files/1/0428/1440/6823/files/canon_eos_rebel_t6i_750d_for_dummies_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2799/6565/files/automatize_tarefas_maantes_com_python_download_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0447/8101/1093/files/descargar_biblia_de_estudio_plenitud.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_off00008289.bin
a7bba6f6caa61ba7a95f135b29ebc95a9117c48b877be535b0b7f5a630430762
pdf-font-stream PDF embedded font (sfnt) at offset 0x8289 5276 bytes
font_01_sfnt_off00009486.bin
9eba6394d5a651af095188c481ae8660e0b6fd120fbd2d12e9f3e7c245869843
pdf-font-stream PDF embedded font (sfnt) at offset 0x9486 10984 bytes
font_02_sfnt_off0000b89f.bin
84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727
pdf-font-stream PDF embedded font (sfnt) at offset 0xB89F 16060 bytes