Malicious PDF — malware analysis report

Static analysis result for SHA-256 e478d57039aeb8da…

MALICIOUS

PDF

38.7 KB Created: 2020-08-19 09:31:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87e037e77f4d7260aad4c95ebcba47e6 SHA-1: 720d2fb5655745f5bbd39f1bc687d2cd27a0c999 SHA-256: e478d57039aeb8da632f5ec4988650873d6d2246e3de9706e36906f1698de5e6
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the primary links points to a known malicious redirector. The document body itself is heavily obfuscated and contains a URL that appears to be part of the link farm.

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=abbyy+lingvo+for+android+free In PDF document text
    • http://files.kateloganbeauty.com/uploads/1/3/1/6/131606876/ff7d1fdd5381.pdfIn PDF document text
    • http://files.skylinekennelclub.org/uploads/1/3/0/7/130776245/ribanav-lolok-wopulalujimarar.pdfIn PDF document text
    • http://suxuvamu.whealey3md.com/uploads/1/3/0/8/130873825/xotabafekowitir.pdfIn PDF document text
    • http://files.redt-miracle-key.com/uploads/1/3/1/4/131407796/3177113.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/1/0428/1804/4070/files/wafupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9212/3556/files/coordinate_plane_quadrants_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7366/6213/files/6136229564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/93152015237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/65577752261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9020/6119/files/93234879881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9458/0136/files/ti_89_graphing_calculator_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4756/8039/files/49473549710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/babiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/snapchat_password_hack_online_no_survey.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 3

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_off00004e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0D 4896 bytes
SHA-256: 6ca5846da455d9aa1a4dd7a3d32ce19df5d64ecd055403d54256ae159725d3bf
font_01_sfnt_off00005ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBF 9676 bytes
SHA-256: 28306097b577336575b89985ad14b6d98e64456270a90f690e557fdb6e70e8c0
font_02_sfnt_off00007fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE7 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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