Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea9b010dc60c9ae…

MALICIOUS

PDF

46.6 KB Created: 2020-08-15 00:24:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa46714b21d4535b181940fecc7d1bb9 SHA-1: 166a1e2cccac07edc0266be99f31263aeff106f0 SHA-256: 6ea9b010dc60c9ae054b619cdd69f194ddc0a14490a21a282b3ccab2e6c9f5a6
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic indicating it's a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'encryption key management' and includes the same malicious URL. This suggests a social engineering lure to trick users into revealing sensitive information, likely for financial gain or account compromise. The presence of numerous embedded links, many pointing to Shopify, further supports a link farm or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/pify?keyword=encryption+key+management+procedure+template
    • http://bivibutil.forventuretravel.com/uploads/1/3/0/8/130874197/ladojuranamekeret.pdf
    • http://penij.nopss.com/uploads/1/3/1/0/131071073/weremopisuj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/notali.pdf
    • https://cdn.shopify.com/s/files/1/0439/7305/0526/files/gastrointestinal_tract_mcq.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/chacun_sa_route_paroles.pdf
    • https://cdn.shopify.com/s/files/1/0432/5752/8480/files/bonipetu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/el_almohadn_de_plumas_horacio_quiroga.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/wedowatejurixudimewu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/mivurilavenumovu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8730/6658/files/carbonated_beverages.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/antrenmanlarla_geometri_1_2020.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a5d.bin
e020e2e28324a6b10e1f1abff6d0b99643c0daa82e012f0adc9ff1287f221ac5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5D 5340 bytes
font_01_sfnt_off00008c70.bin
1720fa29b7a379395b0c29a26c596567ac57bd3205ed1fbc9a0eb8070ec9d80c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C70 9780 bytes