Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8d0b9fd6f10d3e7…

MALICIOUS

PDF

56.1 KB Created: 2020-08-12 12:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3acf6bc898027971fdd94d52573c97f3 SHA-1: 1ac433a67c23d8fe5f0e7a232099db84e9cee34e SHA-256: e8d0b9fd6f10d3e718c81d17915531783abea9f3c37957d500c1bb0240568520
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. This redirector is designed to lure users to download a PDF, likely a phishing or scam document. The presence of a link farm further supports the malicious intent of distributing unwanted content.

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=bristol+stool+chart+pdf+download In PDF document text
    • http://files.donviecelli.com/uploads/1/3/1/4/131407857/sobimewes.pdfIn PDF document text
    • http://vofakare.sirsdigitalcommerce.com/uploads/1/3/0/7/130776433/dideno_susekowijafif.pdfIn PDF document text
    • http://vopaxixa.ladieslearnenglish.com/uploads/1/3/0/7/130738731/3389600.pdfIn PDF document text
    • http://files.imasters-international.com/uploads/1/3/2/6/132695805/b13714710e9.pdfIn PDF document text
    • http://koxeku.mshsupwardbound.com/uploads/1/3/0/7/130739192/lijepebetoka.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/1/0428/9835/8432/files/21659337375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7405/0458/files/b4_public_finance_and_taxation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2036/7510/files/bookkeeping_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/93185160669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0913/7049/files/26536353310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/rugexirubodibizosupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0357/4432/files/agilmente_libro_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/23538753030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/74171802707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9279/4773/files/advanced_mathematical_concepts_precalculus_with_applications_online_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/13965262555.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 8

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_off00009cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CDF 5384 bytes
SHA-256: a36969a6ce2e00c2f4adb11af179724da5d446921d5d4bee9178676b3a26760f
font_01_sfnt_off0000af38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF38 10504 bytes
SHA-256: 32216bcbbf86eca79535e3a1d9e891ab0c18b8f0f765866b62eda776b7ea6f24

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