Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1595fcf8d69a8d8…

MALICIOUS

PDF

43.6 KB Created: 2020-08-23 01:13:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1a78ef49941c37db8044bb16bad96c4 SHA-1: 49ed628376db68d225ae13da86e9c614b5d4eb9a SHA-256: e1595fcf8d69a8d8183f49787709b87763d53d742ff0b334dc59892ea0c51cb0
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service that ultimately leads to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Yearbook templates google docs' and the malicious URL, suggesting a phishing lure for free templates. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to an attempt to obfuscate the final malicious destination.

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=yearbook+templates+google+docs In PDF document text
    • http://files.fbcmaysvillemo.org/uploads/1/3/0/7/130739404/kamesifagu_wikodusa_xefoj_tegokopiroz.pdfIn PDF document text
    • http://files.cosmicreality.net/uploads/1/3/0/7/130775368/a50bcd902.pdfIn PDF document text
    • http://kukapila.barbadosottawaassoc.com/uploads/1/3/2/6/132696414/gemeleg_wubebilopata_jajiwopopujotol_vapavatimebu.pdfIn PDF document text
    • http://files.thelandfillchronicles.com/uploads/1/3/1/0/131069819/8a045168db56.pdfIn PDF document text
    • http://files.mw-earrings.com/uploads/1/3/2/8/132814958/1566487.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/1/0437/7611/4837/files/95173356648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/70165231966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6164/0352/files/como_ganar_masa_muscular_de_forma_natural.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/minecraft_skydoesminecraft_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0454/9531/files/aua_guidelines_prostate_cancer_staging.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/86174403653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2387/5746/files/99732720574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1094/8254/files/nusesaxepomimumalijuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/futijifinerodujumagos.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_off000069f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F0 5556 bytes
SHA-256: 8d3b948940a91cb50fb26b12e5e9356498a8cd7741afdb2ef76719b3fa188e46
font_01_sfnt_off00007cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB5 10808 bytes
SHA-256: 17a4fd951335a12533986d7653a197aa7ab188df0a321575c3ef2a0ce3bad370

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