Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a6481d0c2aa9bf…

MALICIOUS

PDF

47.4 KB Created: 2020-08-07 10:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 445a85532680d7b167b03d7ee73283c7 SHA-1: e83b35e004d32874f8dceaa72d5ab008730e3f0c SHA-256: e9a6481d0c2aa9bfe15320d85c3c859208c829721211ea7afb0165b8fabfea23
254 Risk Score

Malware Insights

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

The PDF contains a lure for a 'Bitcoin logo pdf download' which, when clicked, redirects to a malicious URL. The document also contains a large number of external PDF links, likely for SEO manipulation. The primary malicious IOC is the redirector URL, which is used to funnel victims to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=bitcoin+logo+pdf+download In PDF document text
    • http://files.suehuitt.com/uploads/1/3/2/6/132681028/6436100.pdfIn PDF document text
    • http://files.markalanbabcock.com/uploads/1/3/1/3/131379343/legasu.pdfIn PDF document text
    • http://files.welshpromscymru.com/uploads/1/3/0/8/130873715/6479861.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/69662416098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/34808089657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5808/6556/files/80503117177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3305/8715/files/84219782241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/59055217169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/what_is_meetup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4313/3352/files/gewasazofadureged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8904/9238/files/meteriva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/griffiths_electrodynamics_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/lowemebasidakubemef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/marriage_d_amour_sheet_music_piano.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 4

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_off00006f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1B 4860 bytes
SHA-256: 449a29f0b4f205a65126c92cc29fbb5eb037898d2ea143a720790e4cedfd0725
font_01_sfnt_off00007fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBA 10248 bytes
SHA-256: 88db0ba0ae066313cef4f675959282c3a171daa27abd65f08836ff4902270a52
font_02_sfnt_off0000a2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2CA 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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