Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0423f51bd1d63b…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 20:57:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 82e2acee8d02f54b909af017bd3d6a9d SHA-1: 8adb91e1573879f403281e12ff0d93b28da4c940 SHA-256: 9b0423f51bd1d63bd6ab4499a83c3292f6615bfdbab8d7fd8581107c4c0db908
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=a6+flyer+template+word'. Another critical heuristic indicates a PDF link farm, with 24 generated SEO PDF links, predominantly hosted on cdn.shopify.com. The document body contains a call-to-action phrase, suggesting a lure to encourage user interaction with the malicious links. The presence of a malicious redirector strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=a6+flyer+template+word In PDF document text
    • http://files.esa-ohio.org/uploads/1/3/1/4/131437017/giratez.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/1/0428/9314/8313/files/gasixipirogirazojokofot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6567/9776/files/46420337051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/cardiologia_livro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/latetidubiveji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4245/5195/files/makapobegikijekirebokaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9186/0383/files/fuserekimofedemirabimed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2224/4250/files/coconut_oil_for_crepey_skin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/godepibupulani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/redejetoseketuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5923/3443/files/43275481361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/55129061227.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 2

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_off00006784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6784 5348 bytes
SHA-256: 100b0e363b23e51cb84f0a747c630589d6062a6949c8df578c0c528dd8f3d393
font_01_sfnt_off000079b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B0 12500 bytes
SHA-256: e6aad46ba603176af38a7c6fab9983792980ea651a27d79eb1b7e4e35a217b6e

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