Malicious PDF — malware analysis report

Static analysis result for SHA-256 27319b1d2d89e14b…

MALICIOUS

PDF

43.1 KB Created: 2020-08-10 13:24:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3e9e8d7058533aee0ebec1ccc0f4655 SHA-1: f56c473fba19facd51708254824d27a3efa406bd SHA-256: 27319b1d2d89e14be95b7047d7a386b9beca646b3acd7085bb08716d42e49aad
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to Shopify domains hosting PDF files, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=rf+power+amplifier+design+book+pdf'. This indicates the document is designed to redirect users to malicious sites under the guise of providing a technical book.

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=rf+power+amplifier+design+book+pdf In PDF document text
    • http://files.texashollandlops.com/uploads/1/3/1/3/131379371/7953459.pdfIn PDF document text
    • http://files.maggiegyoga.com/uploads/1/3/2/6/132682820/xabosakisem.pdfIn PDF document text
    • http://ripok.cubbingtonandleekwootton.net/uploads/1/3/1/4/131437736/bofej_ganubisotuzoke.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/1/0434/0056/0803/files/lasepajilip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/xotomumotaxugozemeliroz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/48267348490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1314/0643/files/html_to_free_online_converter_aspx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7781/1867/files/tb_meningitis_complications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94260126358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7811/3697/files/91056524240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/puxokak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2296/7206/files/pokemon_black_and_white_emulator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3548/2517/files/chemistry_matter_and_change_teacher_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/indefinite_pronouns_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2713/5640/files/wugenazarikupeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1300/8534/files/impulse_control_activities.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_off00006a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A82 5664 bytes
SHA-256: a81b7d39a384982195c050ca659c7ddcb7aee9cc1654c7d7e0bbd5b17737bf2d
font_01_sfnt_off00007dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC9 9936 bytes
SHA-256: bdf15f2c51113aabf231dd929a4cb03839b53b87496cbbd7849fb8fbb59ae551

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