Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ce450788c6cb01…

MALICIOUS

PDF

45.2 KB Created: 2020-08-14 13:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d73ab3a77044637b843c7a37ad23ebd SHA-1: 53c34723b34ee87cbf26214fdea935afee93f285 SHA-256: 70ce450788c6cb0146ff1ea7814d795f7462a0dec24cb8376db4c0d95ea8b48d
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'Mumbai university idol courses pdf' and the malicious redirector URL. The presence of numerous PDF links suggests an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

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.com/wb?keyword=mumbai%20university%20idol%20courses%20pdf In PDF document text
    • http://files.jonwray.com/uploads/1/3/2/3/132302910/puzupijuxotukok.pdfIn PDF document text
    • http://files.daughtersofthenewmoon.com/uploads/1/3/1/4/131406893/zevedabarij.pdfIn PDF document text
    • http://pakili.christianlitforafrica.org/uploads/1/3/1/1/131164250/9240955.pdfIn PDF document text
    • http://files.hopespringsvenue.com/uploads/1/3/0/8/130874480/3731519.pdfIn PDF document text
    • http://files.brianwhitson.me/uploads/1/3/2/6/132696113/fafuvapo.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/1/0428/4101/4438/files/81567420715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1714/0386/files/transformers_mod_1._7._10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9331/9068/files/doxotaruf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/15273415830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1539/6776/files/59979577757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/botumikat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4982/6969/files/dozoxepakum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2992/8863/files/sans_discord_emoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1808/2709/files/sazupudidarujofivabuvize.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_off00007162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7162 5608 bytes
SHA-256: 3d8c81069611b3acb2df51b6ce06f6be4b20879112efe815b85f550dc796ad0c
font_01_sfnt_off00008468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8468 10504 bytes
SHA-256: b0d63d6c50361eb8d31d35ad9d792fb477733a72a55e29803994c8d8bd7b995d

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