Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c5b1ce80c22f949…

MALICIOUS

PDF

43.5 KB Created: 2020-08-09 15:33:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87aad75938dd31e11fcb4d8451570a53 SHA-1: cdec82f34df8e18d1dcec7710889786e4ee71657 SHA-256: 7c5b1ce80c22f949415cefacba0b6b3b7f5c31eef1631bdc19263d25535ef1c2
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though partially corrupted, includes a URL that appears to be part of a phishing lure for a book download. The ML classifier strongly indicates maliciousness, and the presence of a redirector URL suggests an attempt to lead 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.cc/pify?keyword=livro+de+neemias+hernandes+dias+lopes+pdf In PDF document text
    • http://files.borntocreate.store/uploads/1/3/0/7/130740264/pekam.pdfIn PDF document text
    • http://files.galafordreams.com/uploads/1/3/1/3/131398140/xipeg-sajag-nuzumi.pdfIn PDF document text
    • http://files.oceanpinesmotel.com/uploads/1/3/0/7/130775784/fopezapudinowol.pdfIn PDF document text
    • http://files.dancerscornerlr.com/uploads/1/3/0/9/130969800/2d05f76ffaf.pdfIn PDF document text
    • http://files.selectstartpress.com/uploads/1/3/1/3/131383837/biwowo.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/1/0430/0580/4698/files/ecriture_alphabet_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/fundamentals_of_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/84046089961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3724/5085/files/do_androids_dream_of_electric_sheep_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/quimica_inorganica_atkins_4_edicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/range_guide_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/grade_12_physical_science_module.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/38672679070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/45876941593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8951/1068/files/reactor_idle_save_editor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9815/8744/files/66966763015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/ragenovu.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_off00006705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6705 5284 bytes
SHA-256: b97f6282c03bd52cda45e6717d76ae0713a61916a41865708382c08236c05ef6
font_01_sfnt_off000078d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D4 12504 bytes
SHA-256: 5ccc0fbe12e68c2cdce31d7cbade777d06eed1bf0870e4d8ab23a12b5c61ccba

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