Malicious PDF — malware analysis report

Static analysis result for SHA-256 27a11f621c51fc44…

MALICIOUS

PDF

38.0 KB Created: 2020-08-07 02:28:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3fe3f3978fedd46b6f48cbe3445d9f6 SHA-1: 357f92c5f5642be71af7f24993961f5048af3bb4 SHA-256: 27a11f621c51fc448bd2456df37868685422bbdf685fa45e4153d3ff43b7ec18
194 Risk Score

Malware Insights

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

The PDF contains a high number of external links, many pointing to suspicious domains, and one critical heuristic firing indicates a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the malicious URL. This suggests the primary goal is to redirect the user to a malicious site.

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=transformadores+de+alta+frecuencia+pdf In PDF document text
    • http://wenefo.mobile-mower-fix.co.uk/uploads/1/3/2/7/132710621/9470789.pdfIn PDF document text
    • http://jotovite.spokenwordministry.org/uploads/1/3/0/7/130740051/pegumub.pdfIn PDF document text
    • http://files.ciampateam.com/uploads/1/3/0/9/130969656/dabavavagotader.pdfIn PDF document text
    • http://xuvinuzu.rebeccabelldressage.com/uploads/1/3/1/6/131637136/3a88b8f6ff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/machine_learning_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/xumetajabijiwivivukediwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/fomupiwizikujuziloxogut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2882/4742/files/biogas_production_from_municipal_solid_waste.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/15217054300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4020/1109/files/poxazuwekepekarepoliguxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/bimod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8120/2854/files/fuxipanujej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5327/7603/files/la_vida_en_mexico_madame_calderon_dela_barca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jewaxepolirabosumasedud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/45037320417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/bticino_axolute_catalogo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A9 5132 bytes
SHA-256: be7f3c398765b372826825e0a37bdc3b38f1e88d6b10df44ff4a7bd9256ed4a5
font_01_sfnt_off000058fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58FC 10468 bytes
SHA-256: fb381d0e40d1ff8ad8ed018fec1c0886f74dc99e0a3130303638ee2372b4c517
font_02_sfnt_off00007b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B19 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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