Malicious PDF — malware analysis report

Static analysis result for SHA-256 763dcc2547b60b44…

MALICIOUS

PDF

45.1 KB Created: 2020-08-03 18:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89adb17f77a61d8d305fe5118da68ab8 SHA-1: 6686326eead6224a0ff23751b879edb0205fa3b7 SHA-256: 763dcc2547b60b447796c5f10aaec93c74c2518915a1481176e69aae08ceedc9
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=ncert+class+9+biology+notes+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious infrastructure. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to distribute malicious content.

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=ncert+class+9+biology+notes+pdf In PDF document text
    • http://files.weinstein-math.com/uploads/1/3/1/8/131856543/diniw.pdfIn PDF document text
    • http://files.mitalentzcompany.com/uploads/1/3/1/4/131438461/f7b8bbb332.pdfIn PDF document text
    • http://files.motherstouchhomehealth.com/uploads/1/3/1/6/131607310/zolotuzulukigawuk.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/1/0434/5207/2086/files/40896164695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8921/5129/files/panchatantra_kannada_stories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/netikesakafinorejejefoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7764/1116/files/44004473182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8427/5109/files/raspbian_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nawujumukupuzuwoxelojoses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7835/2034/files/sedewobot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6831/6055/files/gubatikowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0962/8570/files/49186017063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/buxatepudekegajigoguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1197/3026/files/29563589153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/doduwasiteniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1000/6940/files/kenmore_he_3_washer.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 4

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_off000070e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E0 5692 bytes
SHA-256: f0f623c09c034425f5f50cc4bcbc0d6de49c7788143198db9d90bd14e41af1e5
font_01_sfnt_off0000844c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844C 10196 bytes
SHA-256: 9d531b0374d4b3147308ca76c659b98bbabc32533c746f68ed9323526a7b7b0f

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