Malicious PDF — malware analysis report

Static analysis result for SHA-256 d06a8cb060677906…

MALICIOUS

PDF

42.9 KB Created: 2020-08-02 22:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3e97eb0eb6eff308979f4af49c48103 SHA-1: e51a478da5d422bd460e07f08511b57217d0ae97 SHA-256: d06a8cb060677906fab93d55381ab2634413a21307bf7b0d609c73c98d542d94
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URLs, particularly the one pointing to 'ttraff.com', are indicative of a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing the malicious intent. No scripts were extracted, but the sheer volume of links suggests a broad-based attack.

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/pify?keyword=space+saver+microwave
    • http://files.jennajordanart.com/uploads/1/3/2/7/132740458/bizekidixiwuvi_zazenuvofabiz_werosa.pdf
    • http://files.buffalo-hood-cleaning-services.com/uploads/1/3/0/7/130775435/wesepobudanilavexilo.pdf
    • http://files.generatoronlinestore.com/uploads/1/3/0/8/130874469/4546800.pdf
    • http://files.wirralcpd.co.uk/uploads/1/3/2/6/132696155/migimobixa.pdf
    • http://files.nickcutroneo.com/uploads/1/3/1/0/131071137/nozuje.pdf
    • https://cdn.shopify.com/s/files/1/0440/0067/3950/files/97442080286.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nitopufekuriwuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/2674/1405/files/7467005140.pdf
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/jupizoduwefex.pdf
    • https://cdn.shopify.com/s/files/1/0432/3934/2248/files/mevozawugasekurategaxilof.pdf
    • https://cdn.shopify.com/s/files/1/0439/4388/7016/files/pasuwugef.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/88109619453.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/tikezazakibawajuf.pdf
    • https://cdn.shopify.com/s/files/1/0439/7809/6798/files/2016_chevy_cruze_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/pomelanikowovo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8220/9698/files/37259346633.pdf
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/dekomabaxusijefojepexod.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/kasofipiramexuka.pdf
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/degazoxafibojitas.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_off00006857.bin
487e8cda6ecaeb9105130116a8307d515ce8e906f92ed657053e555c4a6d0d55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6857 5304 bytes
font_01_sfnt_off00007a61.bin
707744cee84ee9ad17f48e8c906b62a4073177e338439ecff8ee7b3b79e70ada		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A61 10488 bytes

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