Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba03a2376d754273…

MALICIOUS

PDF

38.7 KB Created: 2020-08-04 04:09:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4c507b060f79dbea6e016cc17347b86 SHA-1: ba555f86ac166b94d9dd7c953d5f04889cd8f8b4 SHA-256: ba03a2376d75427398050c3292d7f4e928f1bd7939945ced5215f1142cfc94fc
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a 'free pdf to word doc converter' and the malicious URL itself. This suggests a social engineering lure to redirect users to malicious content.

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=free+pdf+to+word+doc+converter+v1.+1+download
    • http://files.psychoslaughterman.com/uploads/1/3/1/3/131380480/savavokiniwo_nojigaxe_visobugili_gugamipuvobaxo.pdf
    • http://files.agelessfitsb.com/uploads/1/3/1/4/131437941/ximiginajopaji-tidizaxor.pdf
    • http://files.myfmpac.org/uploads/1/3/1/8/131856270/tagap.pdf
    • http://files.northsoundjuniorcheer.org/uploads/1/3/1/4/131453188/8681207.pdf
    • http://files.bordercollieblog.com/uploads/1/3/2/6/132682565/mepopukamofer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65107231385.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/a_an_the_no_article_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/31942699882.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87745409623.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/antenna_engineering_handbook_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/3391/0681/files/1985_chevy_s10.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/brahma_kumaris_murli_english.pdf
    • https://cdn.shopify.com/s/files/1/0435/3166/5562/files/21098354514.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/vulak.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/xibivonexivoweleduxoda.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/luronavigifafiden.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tusag.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9607/files/core_muscle_exercises_for_lower_back_pain.pdf
    • https://cdn.shopify.com/s/files/1/0441/0625/2440/files/tanonikafetosuzatifew.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_off0000589f.bin
b8174f64ba7b0f47a7a88c2548b690d93ee9cf317dcba4d874031482279f1591
pdf-font-stream PDF embedded font (sfnt) at offset 0x589F 5160 bytes
font_01_sfnt_off00006a68.bin
c3f5b09a851e5ae76f6a02a76df23212b4215ab364863f06802fdcb20338e819
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A68 10324 bytes