Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ca80c7753861e6…

MALICIOUS

PDF

44.0 KB Created: 2020-08-05 04:28:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79a0bb50fe0ed1a98393ff420817af38 SHA-1: ff6ba4a4d5c569d97b1adb31ab8be1c03e7b9787 SHA-256: 96ca80c7753861e63fd22f29e30538514b2b97d2d3f570fb6fc5fe85aba30332
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links, 'https://ttraff.ru/pify?keyword=6th+grade+math+word+problems+worksheets+with+answers+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the intent is to lure users into clicking malicious links under the guise of educational material.

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.ru/pify?keyword=6th+grade+math+word+problems+worksheets+with+answers+pdf In PDF document text
    • http://files.frankysmusicproduction.com/uploads/1/3/1/4/131438013/e2c7f00.pdfIn PDF document text
    • http://vuvamubom.knottydesignco.com/uploads/1/3/1/6/131607163/9430407.pdfIn PDF document text
    • http://files.austinarttherapycollective.com/uploads/1/3/1/4/131437376/dea6e1b6b1b080.pdfIn PDF document text
    • http://files.coloradoxfac.com/uploads/1/3/2/6/132681460/3166459.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/1/0437/2588/1498/files/kefubasajevezibubus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/bonenenelukutosisuninomod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0088/7456/files/8973750463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4138/0762/files/91821377759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/western_snow_plow_troubleshoot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/womavujeximonuzara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1625/5650/files/lalanuvigeselogipibuxeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/41653862585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/9736168329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/3120551015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/automatic_irrigation_system_project_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0686/0187/files/79685977823.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1E 5808 bytes
SHA-256: cbca366ecd3c4cf0e8d80cb387be4f0122fa49ad3e8fa7f5346ef7570b06cf0c
font_01_sfnt_off00007ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC3 10556 bytes
SHA-256: deb8106517f2ec70f293e91cbd6aa8fab630c03885eae4129fafa4fef33f0e2a