Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b76ac48f2ebefad…

MALICIOUS

PDF

50.9 KB Created: 2020-08-10 14:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69bc235a74d2973d41f60747c94d7557 SHA-1: d1c504ccd5baab26bc960278630d09ed79e67569 SHA-256: 1b76ac48f2ebefadeb39c1f9639ba6759cc5f6d1d4fd430ab1c6d4e06d5a1157
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a resource about anarchism. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the target URL which is also listed as an IOC. The PDF also contains a large number of external links, many of which point to shopify domains, suggesting a link farm or SEO poisoning tactic.

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=libros+sobre+el+anarquismo+pdf In PDF document text
    • http://ropel.orbitalhoops.com/uploads/1/3/0/8/130814328/bizisukoxotitosedesa.pdfIn PDF document text
    • http://files.aminzargar.com/uploads/1/3/1/0/131070309/2709172.pdfIn PDF document text
    • http://files.bouldermusicinstitute.com/uploads/1/3/1/8/131856945/binofenovebukidedin.pdfIn PDF document text
    • http://files.mineralintelligencecapital.com/uploads/1/3/1/3/131398251/moletosazu.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/1/0427/6640/1692/files/aws_certification_solution_architect.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/82005508832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/wugalid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8358/6977/files/83738056966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8034/3961/files/87833581142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97697777452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8089/8973/files/barclays_premier_travel_plus_pack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/jotasofalotepow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/oxford_picture_dictionary_3rd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5387/4329/files/28273009667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/al_quran_free_download_for_mobile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5933/9679/files/60955031643.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_off0000869e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869E 5396 bytes
SHA-256: 1711a46f5d86ab5f2e996bceb94dbabf0b15e63178348f4a1feb369d9a6fd73e
font_01_sfnt_off000098cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98CD 11088 bytes
SHA-256: 55e1f823c86bf22fa4d1c4cb0969ac52143d2b280e0a99ec3e8b4d205233d72a

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