Malicious PDF — malware analysis report

Static analysis result for SHA-256 981f28183465991b…

MALICIOUS

PDF

39.3 KB Created: 2020-08-14 13:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41dd215355721f33afc3c1c2eaacfd77 SHA-1: f8781e3d09b7a66d572c2075b46f3e911904f152 SHA-256: 981f28183465991bc6d7bd0e09366fe91223dc664a82ca1851386e8657442af3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=water+cycle+for+2nd+grade+worksheets', suggesting a lure to a malicious site. The presence of many Shopify links, while individually benign, contributes to a link farm pattern. No scripts were extracted, but the PDF structure and embedded links indicate a social engineering attack to redirect users to malicious infrastructure.

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=water+cycle+for+2nd+grade+worksheets In PDF document text
    • http://files.sunderlandpottery.com/uploads/1/3/0/9/130969402/pafokazok-suxixutifi.pdfIn PDF document text
    • http://files.alzglassandiron.com/uploads/1/3/1/8/131872238/muludusi.pdfIn PDF document text
    • http://files.makingspacesacred.com/uploads/1/3/0/9/130969426/koremif.pdfIn PDF document text
    • http://files.micheles-musings.com/uploads/1/3/1/4/131406403/gekesinifus_kiritebed_nowezemaxe.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/1/0431/9353/2573/files/gogowevelegowifagib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6285/files/juleguzosabigufag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2905/9992/files/pugumobubakisos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/palovonifidekaraxodoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niroduwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0249/8970/files/bracing_masonry_walls_during_construction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0519/0041/files/statistics_short_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/xawufowuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5323/6902/files/apprendre_l_arabe_dbutant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5770/9210/files/drawing_electron_configuration_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3816/9498/files/11_batho_pele_principles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/bacillus_thuringiensis_plagas_que_controla.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 7

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_off00005a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0D 5684 bytes
SHA-256: 5fe0f092835e1504fc9635ea326018d4beb6da5ed7babdfc5f4e696c4f187f9d
font_01_sfnt_off00006d8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8B 10196 bytes
SHA-256: 609189f65c47a6a8b0be14a2c6930ced4ffc8f220e58ca614f988240140a5a73

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