Malicious PDF — malware analysis report

Static analysis result for SHA-256 81134aa3732a1d47…

MALICIOUS

PDF

38.5 KB Created: 2020-08-16 19:23:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c1eaaf3d4468c64d14dd3836a53087a SHA-1: 9425595accf04005d745387263f69b05f41d42a9 SHA-256: 81134aa3732a1d471306ec64ff223f71d88224b03240b414db59a7fa6dc28662
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a malicious domain, identified as a redirector. This is further supported by heuristics indicating a link farm and a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and references to other benign-looking PDF files hosted on Shopify, likely to mask the malicious activity. No scripts were extracted from this sample.

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/pify?keyword=hindustani+movie+video+song In PDF document text
    • http://kigawo.iprintz.shop/uploads/1/3/1/4/131483167/girun.pdfIn PDF document text
    • http://bojiguja.merakiah.com/uploads/1/3/0/9/130969723/9769947.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/1/0429/0750/0711/files/75120211988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/30287495911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/paxovitukos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6318/9405/files/domor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/tifepox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/29664685907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6833/2959/files/91054429827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/components_of_empirical_research_and_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8281/3341/files/santa_baby_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3735/2358/files/93403980359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4222/6854/files/matetesunujuxapinade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/fogigaterafebepagono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9495/7466/files/21964621570.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E9 5040 bytes
SHA-256: dceb504a59ef9c305a5ff7c805a62c546636a9611c5c92b830587491d12281eb
font_01_sfnt_off00006af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF6 9908 bytes
SHA-256: 4a3a6b823cbf61443e180ac8d2e13c850c04d125e686e58cc7d1593b3d892ab2

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