Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8a029cf57afb270…

MALICIOUS

PDF

44.6 KB Created: 2020-08-28 13:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac3f3eac9b90e2f51e2a43262eb23209 SHA-1: 3c0acc3f67882ae42209e56d5f41ca5936cf523b SHA-256: f8a029cf57afb270707bd9a48e8dd88a303c2a937eace45b237e79bfb569cd0b
194 Risk Score

Malware Insights

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

The PDF contains a lure for a free movie download, which upon clicking redirects to a malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the redirection to known malicious infrastructure. The ML classifier also strongly indicates maliciousness. No scripts were extracted, but the document body and heuristics point to a phishing or redirection attack.

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=avengers+age+of+ultron+free+download+in+telugu In PDF document text
    • http://wivevus.humanizing-ai.com/uploads/1/3/2/7/132712354/9572047.pdfIn PDF document text
    • http://files.sportshares.net/uploads/1/3/0/7/130776481/6701229.pdfIn PDF document text
    • http://vitejiv.djspeaking.com/uploads/1/3/1/4/131409090/43e59322a.pdfIn PDF document text
    • http://files.nicetynecessities.com/uploads/1/3/1/4/131453065/eb13a.pdfIn PDF document text
    • http://tiny-ulr.info/x/4o4jclickIn 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/1/0428/5733/2895/files/coast_guard_beach_surf_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8461/9681/files/dibitoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/vivewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/blitz3d_programming_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5997/0202/files/cash_flow_forecast_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/49410026811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6049/3474/files/cuales_son_las_funciones_del_marco_teorico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1887/8117/files/sumilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/waligolimaxawegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/estadistica_descriptiva_e_inferencial_ejemplos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/sel_dan_organel_sel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8503/files/fobawogamelabigasomuvet.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 3

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_off00006f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F97 5216 bytes
SHA-256: 4bc3b911529ecbfbd42ee26cc98e645abb424ad2fc7b0c3aa0d0ff95188e839c
font_01_sfnt_off0000817a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x817A 10380 bytes
SHA-256: 26124a876efd6c9dad68ffe3d7bbc7e322e494601dac5e47435fdf56746eb4b8

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