Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa5460d79670ae1…

MALICIOUS

PDF

34.7 KB Created: 2020-08-14 21:58:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2be779ac70a283c3ddb02ec7af5f454f SHA-1: 4a2bcbb87cd18a64625492ed389a7b409e4a10ca SHA-256: 1aa5460d79670ae1c0ed1b2fefe536c4ccf0fc31fdd1dc12b84faeebabd4b390
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. One critical link directs to a known malicious redirector at 'https://ttraff.ru/pify?keyword=aequor+information+technologies+private+limited+chennai'. No scripts were extracted, but the primary malicious activity appears to be the distribution of links.

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=aequor+information+technologies+private+limited+chennai In PDF document text
    • http://files.theskinpod.co.uk/uploads/1/3/0/8/130874110/wokiduwitub.pdfIn PDF document text
    • http://files.brandonmoorecomposition.com/uploads/1/3/1/4/131438766/muxigem.pdfIn PDF document text
    • http://files.visualshopsd.com/uploads/1/3/1/4/131437689/morigitopop.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/1/0428/4550/3655/files/index_page_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/1160/9500/files/interview_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0147/1388/files/java_reverse_array.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/vimemenutirewapufig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/19758673617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7171/5993/files/close_reader_collections_grade_8_teacher_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6349/files/hockenbury_psychology_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8493/3272/files/92328331573.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_off000047ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47EA 5744 bytes
SHA-256: bf69eea8c50e78a365ff459acd08f5c47d8deb98f3c5c951b0c95f68c31e58a8
font_01_sfnt_off00005b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4B 10132 bytes
SHA-256: f76f27c9090dfa7b4873fba0f456d837443a18d8dba983fcbb8d595f5ce39065

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