Malicious PDF — malware analysis report

Static analysis result for SHA-256 c977c6bc9752cc5c…

MALICIOUS

PDF

38.2 KB Created: 2020-08-10 19:38:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5accf3859a6f95fc8da7cc1f0e59df6 SHA-1: 9aadbd679b182e3d6b618b186cee02401659ad7b SHA-256: c977c6bc9752cc5c76b4c9b01cb0775d5786cf38fef9d20afdcff8b7e130836b
150 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Speak softly love chords pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to malicious infrastructure.

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=speak+softly+love+chords+pdf
    • http://files.landlockedthewebseries.com/uploads/1/3/0/7/130776413/5346b3a78.pdf
    • http://files.relaxedmindtaichi.com/uploads/1/3/1/4/131453902/8ac25d.pdf
    • http://bedilobux.millie4good.com/uploads/1/3/1/4/131438216/bekasanijit_gigarutodis_fipefilijawud_zadigukeji.pdf
    • http://files.southtownscatholic.org/uploads/1/3/1/6/131636990/3996155.pdf
    • http://files.forestdalepto.org/uploads/1/3/0/7/130775850/2776466.pdf
    • https://cdn.shopify.com/s/files/1/0447/9169/3463/files/texto_argumentativo_ejemplo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1801/0274/files/sirufu.pdf
    • https://cdn.shopify.com/s/files/1/0446/5927/7987/files/cutting_edge_pre_intermediate_student_s_book_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/7795/8816/files/titadeduxonoxeja.pdf
    • https://cdn.shopify.com/s/files/1/0431/0096/2967/files/7936542806.pdf
    • https://cdn.shopify.com/s/files/1/0431/3071/6322/files/aashto_standard_specifications_for_highway_bridges_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/1864/1830/files/postmodern_anarchism.pdf
    • https://cdn.shopify.com/s/files/1/0433/2938/8699/files/actas_constitutivas_de_empresas_constructoras.pdf
    • https://cdn.shopify.com/s/files/1/0431/7688/6431/files/79086638510.pdf
    • https://cdn.shopify.com/s/files/1/0432/4868/1120/files/41199235748.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/80379055650.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/14254338557.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/facts_about_earth.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_off00004868.bin
b7ac43a9d02ef2907e4e5e0c9d8470f47f2daacdc018d2bacea717360dfc7e71
pdf-font-stream PDF embedded font (sfnt) at offset 0x4868 5208 bytes
font_01_sfnt_off00005a3b.bin
6b0316d7539bda09f9d137a765b3b4cbb1b828579a51e80327a55f91d6fff3c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3B 10328 bytes
font_02_sfnt_off00007d97.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D97 4324 bytes