Malicious PDF — malware analysis report

Static analysis result for SHA-256 84064812d4ffa450…

MALICIOUS

PDF

45.9 KB Created: 2020-08-17 15:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ff935ab1f005f2c0d43c6364a4414a1 SHA-1: 25885be8d7fa65f48471f13747555112150bcb8e SHA-256: 84064812d4ffa450d449d990f5a064f61bf1936eca1dc51cf72946087bbbc3ff
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external resources, masquerading as a "Kumon answer book". The primary link redirects to a known malicious redirector, ttraff.com, which likely serves as a lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, supporting the presence of malicious redirector links and a link farm designed for SEO manipulation.

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.com/pify?keyword=kumon+answer+book+level+h+math+pdf In PDF document text
    • http://files.atheistsurvival.com/uploads/1/3/0/7/130739776/nefurex-zefafobakexezi-wadokut-pofadubifu.pdfIn PDF document text
    • http://files.diasalinas.org/uploads/1/3/1/4/131438567/busadajuma.pdfIn PDF document text
    • http://files.austindemaille.com/uploads/1/3/1/4/131453522/6794a3b.pdfIn PDF document text
    • http://files.wardpearsongroup.com/uploads/1/3/2/6/132683080/b11b68.pdfIn PDF document text
    • http://supufe.hollingertennis.net/uploads/1/3/0/7/130739192/9289771.pdfIn PDF document text
    • https://geags.com/1il3agIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1267/5990/files/medical_experience_certificate_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/video_trn_web_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2558/7609/files/assurance_wireless_application_virginia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/60628819268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4253/6604/files/mosonitodiwowubamewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3759/5560/files/19703162665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1995/9463/files/tinakavafititarigenifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B2 5440 bytes
SHA-256: 007777be6a22793dc144a31fdbab7b0a13868929ef0ec3554b9b47b8d18abccb
font_01_sfnt_off00007812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7812 10640 bytes
SHA-256: 03d489d79161af9b45b815bd7770e236177788139848080e30f525252f21d2f5
font_02_sfnt_off00009c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C8D 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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