Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b671b3d42afa1b…

MALICIOUS

PDF

43.1 KB Created: 2020-08-23 09:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab75c02acb7aa8717319ecd13a7476a2 SHA-1: 9d2a7b4a912ae549022d8468a0f8c1718edff81d SHA-256: 64b671b3d42afa1b57890c94e0fdd8ffe934b90b24b7af8749ce5d4fa55ec47f
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body itself contains a lure related to 'boxing star apk unlimited money' and a link to a Shopify-hosted PDF, suggesting a phishing or scam attempt to trick users into downloading applications or other files. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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.com/pify?keyword=boxing+star+apk+unlimited+money In PDF document text
    • http://files.byblosdevelopers.com/uploads/1/3/0/9/130968993/9369c0f8ec6d40.pdfIn PDF document text
    • http://files.mcdonnellhomepreschool.com/uploads/1/3/1/4/131454065/tamanufovo-barada-ziraxazufubiz.pdfIn PDF document text
    • http://golege.faithonfireministries.org/uploads/1/3/0/8/130873958/4715359.pdfIn PDF document text
    • http://suvisoner.edensires.com/uploads/1/3/1/6/131606349/wazakovawu_komoke.pdfIn PDF document text
    • http://files.research-solutions.co.uk/uploads/1/3/1/4/131438658/kidikugi.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/1/0431/8380/0474/files/mechanics_of_materials_beer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/lufokuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5789/5841/files/rolibobojuduwigidejezise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/gavaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19189676900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0858/7938/files/aurora_teagarden_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4776/4636/files/58415169065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/arduino_mega_2650_datasheet.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 3

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_off00006a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4B 5560 bytes
SHA-256: 124f21b88654a86bd339a522d9d11aed1f2d928639109d7466ae82e33a5f55d7
font_01_sfnt_off00007d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D32 10088 bytes
SHA-256: eab98dccbec151cf1bc3cfd53f11e27eef942cfdd46b95268aef9bd26484bc41

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