Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f144e0d6a48c935…

MALICIOUS

PDF

49.7 KB Created: 2020-08-10 09:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dae4c59ba8a7885ba981b0e29a118da4 SHA-1: 8088b7a8983d79b585cd9406b36f371d2cd079ce SHA-256: 1f144e0d6a48c93523d0f097d55a18909f766a44333a29f9476800d5dc0d034c
194 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. Additionally, it contains a mass of external PDF links, many hosted on Shopify, suggesting a link farm or SEO abuse tactic. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and embedded URLs, including the malicious redirector.

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=albinos+en+africa+pdf In PDF document text
    • http://files.ildiamon.com/uploads/1/3/1/6/131606111/a90c50c.pdfIn PDF document text
    • http://files.natethehitmaker.com/uploads/1/3/1/4/131453541/kawokudupuwor-bumubutok-zepoxusikipur-rataki.pdfIn PDF document text
    • http://files.erickacollado.com/uploads/1/3/1/4/131437926/pimabazirapab.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/1/0433/7470/6853/files/90143044983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/kozusenoterapojokanivutep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/discord_server_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/smoke_and_ashes_abir_mukherjee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/20194461537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/sigugir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/nejitijoziza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/92924838738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1878/7736/files/ielts_academic_reading_test_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/mofenugapemet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4743/5940/files/wedding_march_wagner.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 8

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_off00006c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C57 5276 bytes
SHA-256: 5cb437e36b921bbb2310b0c7ed4e9c7dc4e403835afaac17278b7675da492984
font_01_sfnt_off00007e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E51 10660 bytes
SHA-256: 2fffc19d35f80fa8f97ec5f3a831bcb77237d990f4cd245e2f9a9275c8eb8843
font_02_sfnt_off0000a29e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA29E 16656 bytes
SHA-256: d1086432a15d12b50e2ebd460639febd362eb323e3f6555a2946282e70f636b3

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