Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca189e04ced62dae…

MALICIOUS

PDF

53.6 KB Created: 2020-08-19 19:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d704b46508b932bf652a4319432919a SHA-1: 7f4b3ae1b4e5604d6b69c745434eb424fcc60e9c SHA-256: ca189e04ced62dae14082fed9ef010d43641f4f29900681e147c15140454d042
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'https://ttraff.ru/pify?keyword=sx1272+lora+module+datasheet', indicating the intent to lure the user to this malicious URL under the guise of a datasheet. The presence of numerous other Shopify links suggests a link farm strategy to obscure the malicious destination.

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=sx1272+lora+module+datasheet
    • http://files.buildmycapital.com/uploads/1/3/2/3/132303009/7b235935ca5.pdf
    • http://files.hipnotions.com/uploads/1/3/1/3/131398131/tifutiruvelopud-vebukugewuxazaz.pdf
    • http://files.yourhomebusiness.net/uploads/1/3/1/6/131637150/a1dad599cc.pdf
    • http://files.melbournesupercarspotters.com/uploads/1/3/0/7/130775071/6987644.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2819/files/22220483252.pdf
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/medical_fitness_certificate_format_for_college_admission.pdf
    • https://cdn.shopify.com/s/files/1/0432/1184/9892/files/ralemokenelagerapuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/8696/8987/files/medebepomuxalanowew.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/bifukeselepolefag.pdf
    • https://cdn.shopify.com/s/files/1/0440/6899/5222/files/rulomosiwivilolitum.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/pdf_to_word_converter_nitro_crack.pdf
    • https://cdn.shopify.com/s/files/1/0430/6151/0293/files/kigivuxarorejovukap.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/sejivigumuvunoperowi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/tamubalokupul.pdf
    • https://cdn.shopify.com/s/files/1/0435/4536/2581/files/torekasibuwimesumibesu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1891/9837/files/aneurisma_cerebral_tratamento.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.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_off00008924.bin
27ba4349f3d38b803a1713335d9321df8890f701c0f1e0fe625ff7398964b89e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8924 5500 bytes
font_01_sfnt_off00009baf.bin
478f1ac1aca2886311889f874919b7fdf68537303aa8b1cfa0fcc397e383af44
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BAF 14860 bytes