Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5c7a33c99f34329…

MALICIOUS

PDF

42.9 KB Created: 2020-08-07 16:06:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4a4a448102c2b2375296c014b9e9c99 SHA-1: 2820472df720dfd573dce75ebc5bb6c7e86ed68e SHA-256: c5c7a33c99f3432916308598dc25e6996cef3e651a2954b418bf43052e44dc48
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=ace+questionnaire+scoring+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF. No scripts were extracted from this sample.

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=ace+questionnaire+scoring+pdf In PDF document text
    • http://files.tridentpest.com/uploads/1/3/1/0/131070113/tageworonis_gupuradurem_xifar_zakamiduxukubib.pdfIn PDF document text
    • http://files.trojerestaurant.com/uploads/1/3/1/8/131857115/mokapememunu-zelenarixiva.pdfIn PDF document text
    • http://kemutune.nourishedandfertile.com/uploads/1/3/1/3/131380429/9773921.pdfIn PDF document text
    • http://files.whitneypublicstrategies.com/uploads/1/3/0/7/130776366/7977035.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/1/0430/5597/2501/files/17797895039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0886/0065/files/45050099657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tusag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/12205639360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/98524011968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0267/2798/files/platinum_physical_science_grade_11_learners_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/9955901371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/etica_aristoteles_livro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0657/4240/files/aggregation_vs_composition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8282/5376/files/casio_edifice_efa_121d_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/rokefavu.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 7

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_off00006a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A25 5404 bytes
SHA-256: 1ca8ca1d4e80432609e19d4b2361776975712b25726d4836bfc704607dce94f7
font_01_sfnt_off00007c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C93 10104 bytes
SHA-256: 322757d64ca7b44b08e3017f643d5078dd973b11a5b88efe75a5dd5003ba525e

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