Malicious PDF — malware analysis report

Static analysis result for SHA-256 aac53cff1d7c7054…

MALICIOUS

PDF

40.7 KB Created: 2020-08-11 06:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0eb4b0d4c6f9d851d3ae7cfbbcaf4da2 SHA-1: f8f98634957f0c99ca04462f10364ace4e497775 SHA-256: aac53cff1d7c7054cbf095edec0e6c90edb90a79254906017402c9e322b199a3
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.cc'. The document body, though heavily corrupted, contains the text 'Arabic to english dictionary pdf online' 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.cc/pify?keyword=arabic+to+english+dictionary+pdf+online In PDF document text
    • http://files.lighthousechinooks.com/uploads/1/3/2/6/132683181/bavuxasogewu.pdfIn PDF document text
    • http://files.signingacademics.com/uploads/1/3/1/0/131070611/gorewajepagu_jamariririvuve_xigigozedav.pdfIn PDF document text
    • http://files.yonah.sg/uploads/1/3/1/6/131606203/wibinanonosowez_xezeg_tufurizuxed.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/1/0433/1523/2921/files/94197847489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/66002450844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1070/3010/files/javascript_array_to_object.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0986/7929/files/92423847177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/lewopitosemal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/xepujisupoxikagadawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/4266824115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5306/2046/files/scholastic_achievement_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4171/7415/files/nibofupadevotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0508/2780/files/vuzusirefawuwuteruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6418/8312/files/menaviwevewesojojisives.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/vovakalizujag.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_off00006193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6193 5648 bytes
SHA-256: cb6b9b2744dbf272e18bc6c7c55ca298ed456c00ff828bf733087bdacef1f6be
font_01_sfnt_off000074b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B9 9672 bytes
SHA-256: 020d41e8e1ac8628c584c43c15b82fe2a6cdef89f5cb2ae789c53f28f5799b49

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