Malicious PDF — malware analysis report

Static analysis result for SHA-256 2871d7905a64e966…

MALICIOUS

PDF

45.5 KB Created: 2020-08-06 17:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6ae129cad0e6a003f08694d16888b7e SHA-1: 43a9c40e182990c28bd9b7f69811cfa5de0558de SHA-256: 2871d7905a64e9665cb5631d4608502f5f870d6e396b9e185d738a54e7a187a9
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and contains a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Estándares de calidad ambiental pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous links to Shopify-hosted PDFs indicates a potential link farm for SEO poisoning or traffic redirection.

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=est%25C3%25A1ndares+de+calidad+ambiental+pdf In PDF document text
    • http://files.bethpumaconsulting.com/uploads/1/3/1/3/131380094/9828465.pdfIn PDF document text
    • http://zonasepes.theventuracountylife.com/uploads/1/3/0/8/130814124/risixepafofozoxux.pdfIn PDF document text
    • http://files.texasdas.org/uploads/1/3/0/7/130739826/4116749.pdfIn PDF document text
    • http://files.britishrecordshoparchive.org/uploads/1/3/0/9/130969470/d817b.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/1/0433/7251/1386/files/geniwotaweso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3448/3605/files/song_with_good_bass_drop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7533/8389/files/xitoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/rebaguzabak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3227/9200/files/gumonatexukomumudawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/fn_sub_cloudformation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/best_reader_for_android_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9935/6324/files/75898539088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9191/7989/files/international_champions_cup_2020_fixtures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/96272619815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/vobizoraredafe.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_off00006e09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E09 5632 bytes
SHA-256: 9a43e7d398a6c7ebdee755fc2a5f767e3a8ee90e7df9741987af31b2ca3fe95e
font_01_sfnt_off0000808d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x808D 11664 bytes
SHA-256: 3593abcf511ba43335249bc48662db4e55228e4b92b424594c501abbdf210de8

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