Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7cf2eea38ddad30…

MALICIOUS

PDF

39.4 KB Created: 2020-08-14 00:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c12b3f77b05836dd9a0e70a08075f0f5 SHA-1: 9d5f68c9cf5816051ea4c2e31cbda9ac6568855b SHA-256: c7cf2eea38ddad30aa4f25c5cafafb6e76d4209594c954887e8b115269791d64
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to 'ttraff.ru', a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Symbolism lord of the flies worksheet' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.ru/pify?keyword=symbolism+lord+of+the+flies+worksheet In PDF document text
    • http://files.maggieroth.com/uploads/1/3/1/4/131438067/e754f1db730b7.pdfIn PDF document text
    • http://files.alliedcontractorsgroup.com/uploads/1/3/1/4/131406800/67a6171857e.pdfIn PDF document text
    • http://files.namelok.org/uploads/1/3/0/7/130740213/zodabejedojomalagod.pdfIn PDF document text
    • http://joxopejos.focuseded.com/uploads/1/3/2/7/132712253/juvajaloz_kanilekoniro_tokisuki.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/1/0430/3015/1330/files/95197917797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4704/0662/files/pexatizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/xikolam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/patupokekugukuwuvisaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/ruvilibeluzopovefov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4658/3976/files/bexobisedetop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5588/1121/files/electronic_transition_in_uv_spectroscopy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0957/files/42781235101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5876/4696/files/fundamentals_of_python_first_programs_2nd_edition.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8F 5436 bytes
SHA-256: ff86293c03daf53e4725730a1cec5e970bee8db2d117e1564f9faa463e4bb2eb
font_01_sfnt_off00006ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFC 9668 bytes
SHA-256: 5e35892587cffcc936531f4effd7db3d60d9ebed37c3a65d7da40e8311f1744d

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