Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96bcd42bb5cda4a…

MALICIOUS

PDF

39.6 KB Created: 2020-10-09 12:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 818bcebeb1022c42892ed11996f14e8f SHA-1: d0ae7fc167dd50c3586288259d56eb4b9e4677c7 SHA-256: d96bcd42bb5cda4a690b08e4c04aa905e895e18e671afcd1b2e7398bb65886e5
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO abuse tactic. One prominent link directs to a malicious redirector, 'ttraff.link', which is likely used to funnel victims to malicious content. The document body, though heavily obfuscated, contains the same URL and search query, reinforcing the lure. No scripts were extracted, but the presence of numerous links and a malicious redirector indicates a phishing or redirection attempt.

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.link/pify?keyword=white+pages+kansas In PDF document text
    • https://site-1037228.mozfiles.com/files/1037228/81976857612.pdfIn PDF document text
    • https://site-1038693.mozfiles.com/files/1038693/xiliperovaregugivodiwij.pdfIn PDF document text
    • https://site-1043414.mozfiles.com/files/1043414/moxebegidowejusotejase.pdfIn PDF document text
    • https://site-1039840.mozfiles.com/files/1039840/pemurawilijovurifilojopi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1428/1625/files/risi_e_bisi_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5874/8837/files/fopot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6213/9816/files/backing_a_commercial_vehicle_is_always_dangerous.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6656/4254/files/1300602165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4528/9112/files/6792522993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0963/7533/files/malfoy_family_crest_foundable_fragment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9856/9381/files/tipifokuridug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0649/8728/files/46749112808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/11053570516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/33162410191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8998/4674/files/bodesonifusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3644/5342/files/parenakajugetidebe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E36 5032 bytes
SHA-256: 380c0ae43ff557c05476aa54140b6c8ad26ecd9cfad65d5237997f97a844c416
font_01_sfnt_off00006f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F67 10072 bytes
SHA-256: a5746130b237d735a9e44515c311d4d39299f5189aa7e155f754e20e5e4f7d27

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