Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5c9e4c04f38fc4…

MALICIOUS

PDF

36.5 KB Created: 2020-08-07 16:20:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9806be9272bc3dffff778063e198921 SHA-1: 987815cbb5bbc233b375b69492f84eafea3f0cff SHA-256: ae5c9e4c04f38fc459fcb0a955e2e85e0b17cffde8a14164f84f6c30849a3d04
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm or SEO poisoning tactic. One critical heuristic firing identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=punctuation+worksheet+for+grade+1+pdf', suggesting the document's primary purpose is to redirect users to malicious sites. The document body, though partially corrupted, contains text related to a 'Punctuation worksheet for grade 1 pdf', which serves as a lure to encourage clicks on the embedded malicious links.

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=punctuation+worksheet+for+grade+1+pdf In PDF document text
    • http://files.ramblesandbrambles.co.uk/uploads/1/3/1/6/131606175/9188525.pdfIn PDF document text
    • http://files.disciplesofthemysterium.com/uploads/1/3/1/6/131606094/dameputazude.pdfIn PDF document text
    • http://files.pegcozzi.com/uploads/1/3/1/4/131453402/lerilomamepagenuxu.pdfIn PDF document text
    • http://files.tahitiwifi.com/uploads/1/3/0/7/130740323/6376505.pdfIn PDF document text
    • http://files.michaeljamesvocals.com/uploads/1/3/1/3/131383541/2092009.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/1/0429/9954/6010/files/59658787013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6111/6064/files/94853312828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/33620593984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6426/2818/files/jefijasuxirekejonijeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0361/6165/files/43195046583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/8660263790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/printable_ged_study_guide_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7401/0782/files/4297374621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2873/3352/files/madifubaperejoxidapilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3759/7607/files/99948207492.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 6

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_off00004fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC9 5596 bytes
SHA-256: 005ba9cea45e822e49711597ba35b484a88900f2ce7e3ebbbc5b240e46ac9224
font_01_sfnt_off000062e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E8 10224 bytes
SHA-256: 2b3be4983ced9c29821dd8908d0dd4012753f25f2fc8b67c80e8239305b4a811

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