Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02e573a284bb9bd…

MALICIOUS

PDF

46.6 KB Created: 2020-07-31 10:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c96dcb497375907f3b3df799489d896f SHA-1: 3d441dd86b9fea4e1a50e14ca5d35f33fccede37 SHA-256: d02e573a284bb9bde1e64f852dc162a6c547685a1613d7285e685aed7be2a800
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file exhibits malicious behavior by acting as a link farm, directing users to multiple external URLs, one of which is a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to IELTS vocabulary, aiming to disguise the malicious intent. The presence of numerous links, including a critical heuristic firing for PDF_SEO_LINK_FARM, strongly suggests an attempt to drive traffic to potentially harmful sites.

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=vocabulary+for+ielts+writing+task+1+academic+pdf In PDF document text
    • http://files.glasgowchamber.net/uploads/1/3/0/7/130738919/xinusezepibobiwab.pdfIn PDF document text
    • http://files.sbcopywriting.com/uploads/1/3/2/7/132740218/644292.pdfIn PDF document text
    • http://files.development12508.com/uploads/1/3/1/6/131607522/vipine.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/1/0428/9835/8432/files/89120948070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8143/1195/files/68012591966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/49910335266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6469/files/savaruwasizigobutitez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/20394010675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/21496511056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7526/2869/files/wazubemosisiwefigufuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/liwunibojukufugozogowel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/tatukotugebo.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_off0000757b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757B 5772 bytes
SHA-256: f27f89d75a12845972e4949f02dbad2518c49b2fd7fb413a1a5b4a7da208e469
font_01_sfnt_off0000891e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x891E 10532 bytes
SHA-256: 4fcd9a142080494ca6f6539e757cdfdf93c7a175bc3ca922798b271fee2ffd2f

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