Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee2608cece8b2cc…

MALICIOUS

PDF

39.7 KB Created: 2020-09-02 11:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6624f0d6c48f02035e5a56fdab538b8f SHA-1: c9693e0beaa220f053730c705684dc284c85a02d SHA-256: 0ee2608cece8b2ccf26f22b8d26be2f022723d66ad4ff7d91c5b8b69b01440ed
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of numerous links to Shopify-hosted PDFs suggests a link farm or SEO poisoning attempt, likely to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/wix?keyword=caping+gunung+campur+sari
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/4995/7029/files/26992745372.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/concepto_de_energias_alternativas.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/equus_africanus_asinus.pdf
    • https://cdn.shopify.com/s/files/1/0438/4142/1472/files/total_conquest_apk_obb.pdf
    • https://cdn.shopify.com/s/files/1/0439/3123/8555/files/dububoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/88999478510.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4154/files/majuzexadikanufuvevutova.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/dagobigevazagaje.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/pdf_fillable_form_data_in_fields_disappear.pdf
    • https://cdn.shopify.com/s/files/1/0462/0032/4249/files/cardiology_atrial_fibrillation_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0459/8684/0743/files/bohemian_rhapsody_pentatonix_musescore.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/binekabuforexaxozoko.pdf
    • https://cdn.shopify.com/s/files/1/0438/1507/6002/files/85281975633.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7271/files/oscillator_free_download.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_off000051b6.bin
bb2c33cda7ab584399161fb87934efdfd8f472fcf8f47771f7a5876954464b4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x51B6 5128 bytes
font_01_sfnt_off0000630f.bin
8f02dbb425734087642fc8a276131b408bce684bd229d0d5662c85e3c206e9ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x630F 14680 bytes