Malicious PDF — malware analysis report

Static analysis result for SHA-256 afa0833d0564a642…

MALICIOUS

PDF

45.1 KB Created: 2020-08-03 12:41:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3bad16dc3c55987812d61dfa3ca05f97 SHA-1: f01591e7f6106b238795e8c9b104638f6843e150 SHA-256: afa0833d0564a6422536056eaa2e0ce97fbe4198ecc65d382e437e402aeabc9f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to shopify.com domains, but one critical link redirects to a known malicious infrastructure at ttraff.cc. The document body, though heavily obfuscated, contains the same Vietnamese phrase as the malicious URL's keyword parameter, suggesting a lure. The primary attack vector is likely social engineering via a link farm within the PDF, directing users to 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.
  • 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=b%25E1%25BA%25A7u+tr%25E1%25BB%259Di+trong+qu%25E1%25BA%25A3+tr%25E1%25BB%25A9ng+pdf In PDF document text
    • http://files.dkgalaska.org/uploads/1/3/1/4/131452922/kudinarepukivapikozi.pdfIn PDF document text
    • http://files.pipart.com.au/uploads/1/3/1/3/131379296/tupowobowunegaw.pdfIn PDF document text
    • http://files.kyoeiuni.com/uploads/1/3/1/1/131163867/4081199.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/1/0429/6343/5679/files/12075373560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/8599550412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/gotimemabiremusafobalivew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5509/4679/files/logistic_regression_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5956/0086/files/62707656833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3831/7464/files/58603352790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/zisedanixubenexiwujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7983/5549/files/92394572210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/43778875991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/buxobosolapuwoxodag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/tusijutodon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2693/9042/files/74041892985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/94362077543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/gawaxepufinororedi.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 5

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_off00006356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 5812 bytes
SHA-256: 4c7f724f8109f5b9596ab86d1deabae82352309c0099ad00482dd60af756fc62
font_01_sfnt_off00007676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7676 21804 bytes
SHA-256: 14e6beb736d2b9df903848b3ee0b49fa35f37aabf6d28e61d8e8910c462041e2

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