Malicious PDF — malware analysis report

Static analysis result for SHA-256 8912aaf5adbf40df…

MALICIOUS

PDF

51.2 KB Created: 2020-08-11 08:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c114f0184e21d611d137f583ddf11410 SHA-1: 3825cdb7c3e93b4ea483126637317e5f5d88ccb8 SHA-256: 8912aaf5adbf40dfd9d383dcea78f0f14a01cd6c9d3e42bd202358222d5a518d
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, disguised with a seemingly legitimate document title. The PDF also contains a large number of links to external PDFs, likely for SEO manipulation or to host further malicious content. The ML classifier strongly indicates maliciousness, and the embedded URLs suggest a phishing or redirection scheme.

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=nmr+spectroscopy+table+for+functional+groups+pdf In PDF document text
    • http://files.fairhavenhome.com/uploads/1/3/2/6/132682851/virozu.pdfIn PDF document text
    • http://pikoga.firstpressiloam.com/uploads/1/3/1/6/131606490/rataro.pdfIn PDF document text
    • http://files.hopeheritagedays.org/uploads/1/3/2/6/132682039/rutuzed.pdfIn PDF document text
    • http://files.tzcichlids.com/uploads/1/3/1/6/131637570/muxuforad.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/1/0428/2236/9446/files/xejediwajijuviliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/58642676481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/25445172590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/ponokudopogez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/41396171705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/sedexinazodifozujakos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7652/5984/files/melorimanopaxawubebazoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/73180457830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2988/7136/files/55128596830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2005/0855/files/74369186516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4379/9719/files/4853100542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2433/3472/files/high_school_chemistry_study_guide.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 2

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_off00007a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A06 5568 bytes
SHA-256: e0818a71f37ca05f882b7dce5fa109790a0a31ec41d1cfb223f8290a5c7384cf
font_01_sfnt_off00008cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD6 10668 bytes
SHA-256: 1bad98f4160f62019b4eda3ebe778e725d92c7458617734574af6a74c026ceac
font_02_sfnt_off0000b12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB12B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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