Malicious PDF — malware analysis report

Static analysis result for SHA-256 e644dc2624370775…

MALICIOUS

PDF

42.5 KB Created: 2020-08-08 02:27:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4914b04a053d28105c27fd3231b3c82f SHA-1: c0a81d2d4badddf3465a97f649162a72ec955030 SHA-256: e644dc2624370775686198f8e147417fe850b469dbcca3533e90221d5ff8ac89
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to a known malicious URL. The document body text and embedded links suggest a lure for free PDF downloads, which is a common social engineering tactic. The primary malicious IOC is the redirector URL.

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=peter+handke+libros+pdf+gratis In PDF document text
    • http://files.mcgilltennis.com/uploads/1/3/2/8/132815298/c67deab.pdfIn PDF document text
    • http://files.angelaherbert-hodges.com/uploads/1/3/0/7/130739895/7811517.pdfIn PDF document text
    • http://files.mattstevensultra.com/uploads/1/3/2/7/132710491/favut.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/1/0434/2031/9893/files/dijiresurobujubaxux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9411/3446/files/79556705884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3738/5123/files/empirical_research_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1430/6467/files/the_masonic_bible.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/labikufufeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/descargar_libro_de_operatoria_dental_de_barrancos_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2214/5943/files/rokinadafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5121/2200/files/tilumeratoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/55014984929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/14765416511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0874/3834/files/48001715147.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 6

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_off0000643e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643E 5508 bytes
SHA-256: 559d5ffaead4823aff81cd1a4fdccd533b275d28f553c1e85e97e95623ceb3e4
font_01_sfnt_off000076eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76EB 11312 bytes
SHA-256: a58b1698b65bda5931e6ee757bdd750eabc27bcb1a924bc450683b1b43298ecb

Open this report in the interactive analyzer, or submit your own file for analysis.