Malicious PDF — malware analysis report

Static analysis result for SHA-256 8560183074f16916…

MALICIOUS

PDF

51.6 KB Created: 2020-07-31 04:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad3e27967dc7a1a35ce260d23ee5433c SHA-1: 83635ef4e48c90814443cee22c29033f9976050b SHA-256: 8560183074f16916e5c75b46406c793fa8426e3975fc895c23a440872bb1e041
194 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to a redirector URL, which is likely part of a phishing or scam campaign disguised as a free download. The ML classifier strongly indicates maliciousness. While no scripts were extracted, the presence of numerous embedded links to potentially malicious infrastructure suggests an attempt to redirect users to malicious 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=c+language+notes+pdf+free+download In PDF document text
    • http://files.laurenandersonrealty.com/uploads/1/3/2/7/132710676/fb2e28b83cf29d3.pdfIn PDF document text
    • http://files.rachelheltonmusic.com/uploads/1/3/2/6/132681033/424764e2.pdfIn PDF document text
    • http://files.berkshiremilitarymuseum.org/uploads/1/3/1/4/131483603/5e6aa1c9f8.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/1/0433/0687/7080/files/kujefitil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/6646018711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/juzopuzenafososokazulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/rinod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/nupuvematopizojudisaban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/fapewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/zujobofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/35483123187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/49960852183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/debuv.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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_off0000744c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744C 5156 bytes
SHA-256: ad846b64f9422e1f3fab7c2d5ee9e12732ae8add0fac85ab7f94947cc0d1fbd8
font_01_sfnt_off000085fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FD 10572 bytes
SHA-256: 06f6af9b890f2250f8f475dbe3bb466b9832926e06c49e5b1d4fcd2b33a8bb16
font_02_sfnt_off0000aa23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA23 16828 bytes
SHA-256: 71a1f245e3b7b4b66cb56281ad327e0c7386c8a20ee3cdc49871311ce29d0c86

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