Malicious PDF — malware analysis report

Static analysis result for SHA-256 387aad4676c21f4e…

MALICIOUS

PDF

46.4 KB Created: 2020-08-23 23:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7da9135b06b6258df76bd8cead74b102 SHA-1: 2451baf13336db319a11225be3fd739acda22d9a SHA-256: 387aad4676c21f4eccf5d7cce4264bade8de578a1a42b9600ab98c2b9e5a1dca
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=free+halloween+birthday+party+invitation+template'. This URL is presented within the document body as a lure for a free party invitation template. The file also exhibits characteristics of a PDF link farm, with numerous external links, many of which are hosted on Shopify. The primary malicious URL is the entry point for the attack chain.

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.cc/pify?keyword=free+halloween+birthday+party+invitation+template In PDF document text
    • http://files.likenootherpress.ca/uploads/1/3/0/8/130814355/3553ab2d52.pdfIn PDF document text
    • http://files.diyprojectnest.com/uploads/1/3/2/6/132681245/dca084784d36b.pdfIn PDF document text
    • http://files.shipmfl.net/uploads/1/3/1/4/131437722/2296688.pdfIn PDF document text
    • http://files.oakparkfriends.org/uploads/1/3/1/4/131437330/kujebikizexot-wedaragemoziw-vaxevafowux.pdfIn PDF document text
    • http://fowibow.rthinspection.com/uploads/1/3/0/9/130969204/vosafipajeluwi_togelotanuz.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/1/0437/1297/0903/files/major_oceans_of_the_world.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/dadub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7056/files/4242939787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6211/7030/files/lisilazitekiputawiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/zibexisokixizedemafebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1079/1323/files/51158703355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/78753606505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2782/3765/files/50735195061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6394/8950/files/jujavaweraxomekifogesena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/29279432793.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_off000076c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C1 5368 bytes
SHA-256: 717ffecd0f99539ebe5c51db71e04e7972e49b6705b430910bad01459e0a1a9f
font_01_sfnt_off000088f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88F1 10312 bytes
SHA-256: 4783bc1775cb535f843cde00f384ee85843366b3751cfc73016495685117e600

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