Malicious PDF — malware analysis report

Static analysis result for SHA-256 7922e441d08dc7aa…

MALICIOUS

PDF

35.4 KB Created: 2020-08-25 16:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d933951f2234f1782602a7c4660bd6d SHA-1: 23d23e88f3b5ad797884f060beddf693f7a843be SHA-256: 7922e441d08dc7aa6e8f5c191c88f543b183abda04b9529bf1f807aad4323afa
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a lure related to 'Christmas images for mobile' and embeds numerous links, many of which point to external PDFs. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=christmas+images++for+mobile'. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent. No scripts were extracted, but the presence of a malicious redirector suggests the document is designed to lead 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/pify?keyword=christmas+images++for+mobile In PDF document text
    • http://files.norforkschools.org/uploads/1/3/0/7/130738836/17cd82.pdfIn PDF document text
    • http://files.monstersandmuchmore.com/uploads/1/3/1/4/131408432/8839502.pdfIn PDF document text
    • http://files.mybrightdelights.com/uploads/1/3/1/4/131483317/5c5e3e7b38eeea5.pdfIn PDF document text
    • http://binalom.vinoetamicis.com/uploads/1/3/1/4/131406821/1425fc6c8d4.pdfIn PDF document text
    • http://files.lowercreekcreations.com/uploads/1/3/1/4/131452887/1962873.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/1/0443/9549/5590/files/exploring_social_psychology_myers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9652/2398/files/atriplex_plante_mdicinale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4518/0824/files/coldplay_the_scientist_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9539/2409/files/australian_super_performance_september_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0994/9348/files/97353638868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9829/1870/files/bodmas_questions_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5630/0186/files/combine_two_arrays_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/sodapafejidurimisagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7763/2154/files/95457054700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/28792791014.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 8

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_off00004ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CE2 5228 bytes
SHA-256: 97610a1cfe9a4c42b184249652fca2628a0b75f1fe50ef453598747464fccf9b
font_01_sfnt_off00005e88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E88 10116 bytes
SHA-256: b85b47371f1132512258d5597b858fcfa1d4cdcace6ff11b52356396317bf37e

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