Malicious PDF — malware analysis report

Static analysis result for SHA-256 579558cfa8fb1a11…

MALICIOUS

PDF

44.0 KB Created: 2020-08-23 07:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c8320937fc92b0303fca487e30c6711 SHA-1: e606ad46ee441e9027b2c2b44235592615f2768d SHA-256: 579558cfa8fb1a11a7dab8612396809994a42fc85894a60325ac5610aed317bd
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. The document body text and embedded URLs suggest a lure related to 'Spotify premium gratis para pc'. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify-hosted PDFs. The primary malicious IOC is the redirector URL, which is likely used to deliver a secondary payload.

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.ru/pify?keyword=spotify+premium+gratis+para+pc In PDF document text
    • http://files.hg-entertainment.com/uploads/1/3/1/1/131164479/resikel_wirifujov_fenad.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/1/0432/4478/1735/files/85290795662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/82966452419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7213/4049/files/runepiwefanigip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7853/3799/files/turiteku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1361/1421/files/jasmine_flower_song_violin_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/kapofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4214/4407/files/cara_gta_5_mod_zombie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3712/1951/files/actisol_machine_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0389/6230/files/1412511618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/27327950599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7897/5639/files/dinuxogakata.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 1

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_off00006d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D74 5508 bytes
SHA-256: 911d9fe186d547a9a91a7f2bdf3632db748ba5ad370436cb3b08c420f9dd179b
font_01_sfnt_off00008020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8020 10456 bytes
SHA-256: d475e71ee9b9a2bf7c4578c58415d606ef9e08abe7abaefb52bb10a01545265f

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