Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3a9665efc9a5a8e…

MALICIOUS

PDF

33.8 KB Created: 2020-08-18 14:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a48f9f0e67d2dc8ffbba11c036c299b SHA-1: 1cb517ecb7a2eebda9d9018027eb7457eba4b28e SHA-256: b3a9665efc9a5a8e48d393c35aff8470cf8012a3e2d1bb67d7acd8ed275bd66f
194 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, disguised as a Halloween word search worksheet. The PDF also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure malicious destinations. The primary malicious URL identified is ttraff.com, which is used in conjunction with a keyword suggesting a benign document.

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.com/pify?keyword=halloween+word+search+worksheet In PDF document text
    • http://jazarabif.ccioh.com/uploads/1/3/2/7/132712615/3466379.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/1/0434/2621/8134/files/kuzapikidapekaxalevira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9390/7869/files/tutokenatijesarixux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/lopezomakikavuresubaruma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/84641892080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78649322563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5930/4865/files/zuwufijujiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/zokoruwelovedinewatimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71482320097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5397/3657/files/epithelial_tissue_chart_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2263/6440/files/alkanes_and_cycloalkanes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/6708971186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9167/2736/files/xinimow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8573/files/what_does._com_mean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/67673109167.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 3

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_off0000471b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x471B 5144 bytes
SHA-256: ee934405c153e1057eb77e0b9417cf359b3d8da0caf25445492e0253e2765367
font_01_sfnt_off0000589b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x589B 9856 bytes
SHA-256: b7367d3ba90fa01fc769ba33e533505d53de4b580f7741aa14990bea711c3493

Open this report in the interactive analyzer, or submit your own file for analysis.