Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b7149701c97214a…

MALICIOUS

PDF

39.3 KB Created: 2020-08-06 06:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f783f67e826f807d0da806bd19f0090 SHA-1: 7b283b62934f847b667c52db0b5ccb31e88844b8 SHA-256: 7b7149701c97214a8ae1031afc01633ab447f407d771d152ad7bab3831e0ef71
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDF files, disguised as educational content. The primary redirector URL, https://ttraff.cc/pify?keyword=english+phonics+books+pdf, is used to funnel victims to these linked files, indicating a phishing or scam attempt. The ML classifier strongly supports the malicious nature of this PDF.

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=english+phonics+books+pdf In PDF document text
    • http://files.gretchenjude.com/uploads/1/3/1/3/131398075/5790187.pdfIn PDF document text
    • http://files.bcwine.ca/uploads/1/3/1/4/131438313/fb8752bc8c268e.pdfIn PDF document text
    • http://files.msdioriosapclassroom.com/uploads/1/3/0/7/130740262/5833efcff8bb78c.pdfIn PDF document text
    • http://files.independencetelevision.com/uploads/1/3/1/6/131606640/1938335.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/1/0430/6337/8081/files/fagupakesijivoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6900/2143/files/wupujarirezuwivosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/47463629224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/xakepijezeradegojipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/xojimexudarewafew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0608/9640/files/stokstad_art_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/tuvosiwixapirupikagim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/dalogimawaregis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2399/7856/files/pamanukizasodofovivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/spring_batch_tutorial_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/gazodomareralemudoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4464/2716/files/norton_360_trials.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_off00005c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7A 5272 bytes
SHA-256: 33afb77ed2f5cb4f81c54cba109da7e095ec0fb91c8e7274ebd743615c382105
font_01_sfnt_off00006e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E72 9884 bytes
SHA-256: c7984847e5fc4c230f902455764f77542e5a8deea6d928a2b0a9760552efe960

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