Malicious PDF — malware analysis report

Static analysis result for SHA-256 62dc3a889e7c419c…

MALICIOUS

PDF

35.9 KB Created: 2020-08-19 12:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2941fffa4fe31109515673d3d970a7a4 SHA-1: 663b92089df22dfb45c1e588cb21e6f7e76bcbab SHA-256: 62dc3a889e7c419caca959d11c63bb0718cfd02e68af2cd7accbb25018625701
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure, potentially related to a song or image, and includes the malicious redirector URL. The presence of a link farm heuristic further suggests an attempt to manipulate search results or distribute malicious content. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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=ahimi+as+deka+mage+dj+song In PDF document text
    • http://files.willyssolekitchen.com/uploads/1/3/2/6/132682655/1505427.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/20449730266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/collingwood_college_camberley_ofsted_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/befunoliketobiboviwadixef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6408/0024/files/alesis_3630_compressor_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/91194287475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6777/2821/files/96606400445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/wujona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/16412557910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/gate_syllabus_instrumentation_engineering.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41EE 4948 bytes
SHA-256: 3acd78fa9ebe3f9656301bb5c9c3d1f4ab86a77fbddd41f2c9ced17b50eac829
font_01_sfnt_off00005291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5291 10188 bytes
SHA-256: 62bdb51679282060087216f29e552e8d81877f7172022bda3b66b55ed111e578
font_02_sfnt_off00007529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7529 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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