Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1741389e9ab16f…

MALICIOUS

PDF

57.2 KB Created: 2020-08-07 02:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c90d565d16375401e85757b6496e7183 SHA-1: 6dcf8ca8175ef053814a3b85a3d192177b33c49e SHA-256: 4d1741389e9ab16f0de47c792473a190ad5963de8ecfa1a048b342b58ca7a398
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=beginning+algebra+7th+edition+martin+gay+pdf+free. This suggests the document is designed to redirect users to malicious sites under the guise of providing free PDF downloads.

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=beginning+algebra+7th+edition+martin+gay+pdf+free In PDF document text
    • http://files.rachelawallis.com/uploads/1/3/2/6/132695862/nuguzubaj.pdfIn PDF document text
    • http://jutabet.westboroughboosters.com/uploads/1/3/1/3/131383377/15b527c.pdfIn PDF document text
    • http://files.tramici.com/uploads/1/3/1/6/131636745/vugolekaxoja_sivef_taselogani.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/1/0430/5905/2706/files/active_and_passive_electronic_components.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8387/files/everlong_acoustic_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1117/7626/files/shot_for_me_drake_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/76062809297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/andreas_vesalius_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6208/4262/files/panodelib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/sunitubagekamed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9086/9410/files/96364329717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4693/5451/files/aprenda_a_desenhar_super_herois.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/26133796139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/jobuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/65533522213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9574/files/music_an_appreciation.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 6

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_off0000961c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x961C 5648 bytes
SHA-256: 58849d72ccf8b99310c3d79a75c7a4788f5f964893b3d1f3bb585563f2028f0c
font_01_sfnt_off0000a933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA933 14092 bytes
SHA-256: ad1c6e22426255be87628ec899bf30e7cab891401f216f7c295da2bbd12fc54f

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