Malicious PDF — malware analysis report

Static analysis result for SHA-256 887791e22d4553b7…

MALICIOUS

PDF

41.1 KB Created: 2020-08-10 14:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d66bcbc1d544e47893ea6e9a6cf69369 SHA-1: d8963f8fe8de745de57920de0b660110fa1a4a0f SHA-256: 887791e22d4553b7b5e5e5a458135795af24a3d27a7efede69979564122ce4ac
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as a "free guide" download, but the primary redirector URL is flagged as malicious. This indicates a phishing or scam attempt to lure users to potentially harmful content. The ML classifier strongly supports the malicious verdict.

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=descargar+guia+de+camping+espa%25C3%25B1a+pdf In PDF document text
    • http://files.drmamouzette.com/uploads/1/3/1/3/131379894/nijomeluramomik_puvivuriko.pdfIn PDF document text
    • http://vegeza.grandchapterram.org/uploads/1/3/0/9/130969352/2864062.pdfIn PDF document text
    • http://files.netliveseminars.org/uploads/1/3/1/3/131384495/musejix.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/1/0437/5642/1269/files/99133620297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6635/9962/files/garemin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/42070056715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9444/2133/files/desi_tv_star_plus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9806/2491/files/nuance_power_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/30061962956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/xiwasujuzet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/50933962407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/tobulabaximuxufujexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/11582386804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/tefokorotuduba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6082/9087/files/how_to_split_a_string_in_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/87411072360.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 4

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_off00005ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECC 5656 bytes
SHA-256: dcd457821356b6808798026de4d6a88848cbc1cd350c24091bf7d933f31329d9
font_01_sfnt_off000071ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AE 10980 bytes
SHA-256: c931015ad796c046e16d310ee17d31cc00fbc75547ac449d8678714c2e0f7e20

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