Malicious PDF — malware analysis report

Static analysis result for SHA-256 556e4789142eb623…

MALICIOUS

PDF

48.5 KB Created: 2020-08-16 21:22:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf58642757449fc8242397ed5962b8a3 SHA-1: 751a787ac9ae5502c32f67955827df280b81e425 SHA-256: 556e4789142eb623fbccdf640860beae094f2f56670320b5c88b907d91a21f43
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body, though heavily obfuscated, contains a URL that matches the redirector link found in the heuristics. This indicates the PDF's primary purpose is to lure users to malicious sites through a chain of redirects, likely for further exploitation or phishing.

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=blade+and+soul+gunslinger+guide+2018 In PDF document text
    • http://files.ephratamartialarts.com/uploads/1/3/1/6/131607005/liwobu.pdfIn PDF document text
    • http://lobis.heritagelanechiropractic.com/uploads/1/3/2/7/132710621/nidorem.pdfIn PDF document text
    • http://mopik.purpletigergonewild.com/uploads/1/3/2/8/132814930/868666adcc1cd.pdfIn PDF document text
    • http://files.dividendhomes.org/uploads/1/3/0/9/130969279/2453476.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/1/0436/9180/2777/files/jitoxiliden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rikakaxudote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/nusirotixosob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/factores_biopsicosociales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/70671588784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/zubivudanumewaxesup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4610/4222/files/84982575551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/68202570759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2520/files/clustering_algorithms_in_machine_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/gojusotizakezemogafokowuf.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 7

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_off00006921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6921 5564 bytes
SHA-256: 82a3396ecf3490b20e04aa06da98f5b00dc62d7f5c329e7a8e7b2d0fb07ae7f6
font_01_sfnt_off00007c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C11 9896 bytes
SHA-256: c42639c7959f3605c66419bd939066efa88427ca7ee55b754e791005d08b4682
font_02_sfnt_off00009e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E36 16744 bytes
SHA-256: 0c821ab8ec5063b4beb8ede8a2eff403379680b662fede973bf6fe49e651f125

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