Malicious PDF — malware analysis report

Static analysis result for SHA-256 653972270ee31af1…

MALICIOUS

PDF

49.9 KB Created: 2020-09-09 14:44:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 020cf81e25ae8ac48be1830784c6d0db SHA-1: 6506b3c2af614d38a8ebc1303a29af3b25a4cc73 SHA-256: 653972270ee31af1a2d13f91de7e77a53460a2b4a05ee9e1f50595d4ea600741
162 Risk Score

Malware Insights

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

The PDF contains a link to `https://ttraff.cc/wix?keyword=google+forms+alternative`, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Google forms alternative' and the URL itself, suggesting a phishing or redirection attempt. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic to distribute malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=google+forms+alternative
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/0221/4046/files/6401549980.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/49897346204.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/hormone_system.pdf
    • https://cdn.shopify.com/s/files/1/0438/2982/1600/files/27690565965.pdf
    • https://cdn.shopify.com/s/files/1/0435/6787/4207/files/napebikepavuxa.pdf
    • https://static.usrfiles.com/ugd/72ed28_118a1b3650234364819bed81c2b86ff1.pdf
    • https://static.usrfiles.com/ugd/9904c2_3c2c66e9ead147d89c1b9d88538b25a8.pdf
    • https://static.usrfiles.com/ugd/289c5e_cb2a576099534de884d13e811fe011c1.pdf
    • https://cdn.shopify.com/s/files/1/0435/6633/4111/files/pekakodotazexofavarupo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/windows_password_reset_disk_iso.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/gadijeterogitasivubevex.pdf
    • https://cdn.shopify.com/s/files/1/0433/7798/3653/files/magifoxozufa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8501/2900/files/american_english_file_starter.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/free_mid_autumn_festival_images.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_off00008338.bin
456830fe91d125c1626a60a2122e6064913512b9af5e091d05a92f68d252c153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8338 5180 bytes
font_01_sfnt_off000094cf.bin
fe19563de897393da0978bb4843c688f52989c173cec34515f5b6ef08ce4d290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94CF 11268 bytes

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