Malicious PDF — malware analysis report

Static analysis result for SHA-256 6172e0ffc29cc963…

MALICIOUS

PDF

57.5 KB Created: 2020-08-10 05:23:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a67a2d3f2b67cffebe915052b98541b SHA-1: 5fa42da87b39067a3ce9d2cf248f999b27e41bf2 SHA-256: 6172e0ffc29cc96348de997c2657e6ffcaab4ccba188b24bd0d2ec6c6f50d10e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious redirector link disguised as information about gas turbines, which leads to a link farm of numerous other PDFs. This suggests a tactic to distribute malicious content or engage in SEO manipulation for malicious purposes. The ML classifier strongly supports the malicious nature of this PDF.

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=axial+flow+gas+turbine+pdf In PDF document text
    • http://files.glambyjac.com/uploads/1/3/1/6/131608017/198820.pdfIn PDF document text
    • http://files.bethgatesglass.com/uploads/1/3/1/3/131381946/deralapafirefir-nevufa.pdfIn PDF document text
    • http://files.andysidornxtlvlfit.com/uploads/1/3/0/7/130775727/kotexogififike.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/1/0428/9835/8432/files/30617095305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6968/files/77388252592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2945/5263/files/80998722197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1207/8243/files/85096835116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9117/9160/files/raxevuvodumoxumelov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9776/7592/files/20782413918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6953/6411/files/una_profesion_peligrosa_luciano_canfora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/10691278343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/dowusozojefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/subumazonubepenexajiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/budurebeduda.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 7

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_off000092cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92CF 5380 bytes
SHA-256: e4fbac4b7df96e51bd008f49c4e9622e9bcad8726a8b6b3dc7862a9a5ea4d619
font_01_sfnt_off0000a538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA538 11480 bytes
SHA-256: 52ffb8618a25a4fdcf15185d67840409579287b50fc3de9457c9ee82ff1f9e17
font_02_sfnt_off0000caf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF7 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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