Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c0667ae2e223984…

MALICIOUS

PDF

42.3 KB Created: 2020-08-04 07:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57fa4efb1aa2764cfce0ea8225cbc949 SHA-1: f89d106e0106534e4aadd99ad82dc23ebad2b25b SHA-256: 6c0667ae2e223984069c57b1322dd8aa56d2fdb8450a90ad5b89ffa33c6e8721
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for a redirector link to 'ttraff.com'. The document contains a large number of embedded links pointing to various PDF files hosted on Shopify and other domains, suggesting a link farm or SEO manipulation tactic. The presence of embedded URLs and the overall structure indicate an attempt to lure users to potentially malicious or unwanted content, likely distributed via spearphishing.

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=the+adventurers+guild+book+2+pdf
    • http://files.bestbodyfitness.net/uploads/1/3/1/4/131453255/779449.pdf
    • http://files.stmanvel.org/uploads/1/3/2/6/132681452/42e2cd758.pdf
    • http://files.thetruthsayerswoodstock.com/uploads/1/3/1/8/131856277/9944731.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/gw2_dark_harvest.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/zugugebi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zofoxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6512/2720/files/migagenagax.pdf
    • https://cdn.shopify.com/s/files/1/0432/8020/3944/files/adjectival_phrase_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/22402651611.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/28874400613.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lejozusuxawunulimedobina.pdf
    • https://cdn.shopify.com/s/files/1/0434/5364/4966/files/understanding_basic_statistics_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/2168/9254/files/fuzaguralajop.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/17336685468.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/tajevokovu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/24638538277.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_off0000645e.bin
286f0860a35b9438a7624e70767fcfba18a7e742667a5e2fe8a8601a3cd66fd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x645E 5648 bytes
font_01_sfnt_off00007793.bin
4c153ae129c1f28628013a62a1e7152d6cee33a34ad9c01539c3da57bd4deabb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7793 10764 bytes

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