Malicious PDF — malware analysis report

Static analysis result for SHA-256 78917068e564d5e2…

MALICIOUS

PDF

42.7 KB Created: 2020-07-14 08:49:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4a6793db9176701aac087a4ce97bc07 SHA-1: da45b1fca9424f913d79ced7ee8a215c592cb6d2 SHA-256: 78917068e564d5e2b59c20751a456bdb1bb2078935e4e7005a8154becff02d28
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate worksheets, but they redirect to a known malicious infrastructure. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be a phishing lure, directing users to a potentially harmful site via a redirector.

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=averages+word+problems+worksheet+pdf In PDF document text
    • http://files.artlynchactingcoach.com/uploads/1/3/1/3/131380868/tagaxe.pdfIn PDF document text
    • http://files.phaseonedismantlingservices.com/uploads/1/3/2/6/132696104/pisedigolari_jejido.pdfIn PDF document text
    • http://files.visaconnection-philippines.com/uploads/1/3/2/6/132695280/7ad51fa803.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/1/0432/6467/1909/files/21001100814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/xibivonexivoweleduxoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1823/1709/files/89131386857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28603075132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2666/files/mudoka.pdfIn PDF document text
    • https://gubuwixu.files.wordpress.com/2020/07/nepemofe.pdfIn PDF document text
    • https://wibuvevi.files.wordpress.com/2020/06/34487504211.pdfIn PDF document text
    • https://taronorumopo846653853.files.wordpress.com/2020/07/xefudovaguwiwul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/88812815048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/12644936237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taniseraguvifololesugom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/tunawujimoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4398/7361/files/rafodojusuvubozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2327/0042/files/96475927373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/fuwazex.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_off000067af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AF 5436 bytes
SHA-256: b291107811ed1588e72a1c5d77b135d990d378950584fd004c5bcfb95d863a62
font_01_sfnt_off00007a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A42 10272 bytes
SHA-256: a14d17f254e184caf0aec7e4f55c9a309dded93ce2dfb49726aab4a5997e4541

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