Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb851b2e04b9df8f…

MALICIOUS

PDF

41.9 KB Created: 2020-08-26 01:00:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: acdabb00df53e560c5f36366cd880f3b SHA-1: 8e55b4ee922638dda97ffee7398cf801d92427b5 SHA-256: eb851b2e04b9df8f945d3184456267272f30fafc3f0e6b4eebc6409f93a2efca
202 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are part of a link farm designed to improve search engine rankings. One prominent link, 'https://ttraff.link/pify?keyword=third+grade+grammar+worksheets+free+printable', is identified as a malicious redirector. This suggests the document's primary purpose is to direct users to malicious sites under the guise of providing free educational materials, likely for phishing or malware distribution.

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.link/pify?keyword=third+grade+grammar+worksheets+free+printable In PDF document text
    • http://lowid.jenniferinafrica.com/uploads/1/3/2/7/132740978/refalawukul_gowanederi_muvab_kexip.pdfIn PDF document text
    • http://josad.avisfordparkgolfclub.com/uploads/1/3/1/6/131606457/wafugirer_damikakixope_pezojorutino.pdfIn PDF document text
    • http://files.advancedurbanmarginality.com/uploads/1/3/1/3/131383586/7515916.pdfIn PDF document text
    • http://dadasezim.nowwwriters.ca/uploads/1/3/1/1/131164278/8531942.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/1/0431/6309/1112/files/ganawodelamodebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/tmsc_dominos_com_sign.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/bujajomifawekivegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/zelodezowuwujug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/valisefevirakezabosito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/latorajumata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/35725974326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/64624864753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0787/7017/files/asking_for_help_social_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/83590155693.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_off00005fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD1 5700 bytes
SHA-256: 9faf7a7eaf2d3be62b12680e4a96b969aaa3d579983c84d62d77d64a39ccf94d
font_01_sfnt_off00007327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7327 11604 bytes
SHA-256: cb75ad5d02e109d0d10e79b2cf3a9db7726704e708b06276adc8f53a71077689

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