Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe038196af7eb53…

MALICIOUS

PDF

43.5 KB Created: 2020-08-12 01:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b753934be6185b7b6de6bb6ef5e5066a SHA-1: 42b933f6c3c4a4b6c32b3a40aedc0b3ce17b81d2 SHA-256: 9fe038196af7eb533ecdc8123f28f034720b40e18fc46d18ca1f445e292bf5d5
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a document about auditing standards. The ML classifier strongly indicated maliciousness, and the presence of numerous external links, many pointing to Shopify-hosted PDFs, suggests a link farm or SEO poisoning tactic. The primary IOC is the malicious redirector URL, which is likely used to funnel victims to a further stage of the attack.

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=canadian+auditing+standards+pdf In PDF document text
    • http://files.luisnrstudio.com/uploads/1/3/2/7/132710627/12365.pdfIn PDF document text
    • http://gukijar.be-sharp.co/uploads/1/3/1/1/131163725/zenuvokud-wenetejur.pdfIn PDF document text
    • http://files.triplepottamusg.com/uploads/1/3/0/9/130969435/8605794.pdfIn PDF document text
    • http://files.cogitojiujitsu.com/uploads/1/3/2/7/132740253/c02f3.pdfIn PDF document text
    • http://files.circlecitydanceproductions.com/uploads/1/3/1/8/131858044/dikilijugo_devazuk_werakurokipolu.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/1/0435/9490/7810/files/lakshmi_ashtakam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9429/3142/files/bleomicina_mecanismo_de_accion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/gexodunuxomutug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/zarikaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/the_5th_wave_book_2_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2274/4741/files/73517762215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/kewexuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/nefetebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/44738185880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/pan_africanism_in_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/darinimojij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/hoover_manuals.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E22 5084 bytes
SHA-256: e76f506c058556319b9836397f6ab2aec3c192e2adf8e03aba5f7531cac79e91
font_01_sfnt_off00007f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F79 9824 bytes
SHA-256: be6467478cf53c6eafc164b0171cbdbaf55490190019ff3ce220829328fa32b5

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