Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0b0023567918ba…

MALICIOUS

PDF

37.8 KB Created: 2020-08-12 18:15:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b159f9baf1bf2e66fce5cb78bb359bd6 SHA-1: d5ff185a24ff54788ccc4c620b754639d4397f3b SHA-256: 6f0b0023567918ba38007ffe426dbe7313341f8e7d017584f7dc2a936a9745c1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to an SEO redirector infrastructure. The primary redirector URL is 'https://ttraff.com/pify?keyword=chemical+formulas+list+for+class+10+pdf', which is designed to phish users under the guise of providing a free download. The ML classifier strongly indicated maliciousness, and the PDF structure suggests an attempt to generate traffic through a link farm.

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=chemical+formulas+list+for+class+10+pdf In PDF document text
    • http://files.sthildascrossgreen.co.uk/uploads/1/3/1/3/131383319/nuradozen-bebopu-vimilefidemafa-gevoxipa.pdfIn PDF document text
    • http://bilisi.thegoodlifeheatons.com/uploads/1/3/2/7/132740813/miwapim.pdfIn PDF document text
    • http://files.daniel-pratt.com/uploads/1/3/0/9/130969663/fulag_garokere_maziwinomop_xelewuxa.pdfIn PDF document text
    • http://files.andylivingstone.com/uploads/1/3/1/6/131606674/a290ae1e7a510e8.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/1/0428/2092/7655/files/pikewupajufekem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7983/4531/files/jurnal_internasional_akuntansi_biaya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/luwokin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7545/2569/files/73367285078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/33852769040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/65774005159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/mesazisaditefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/tozuxaxidesadema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1723/8685/files/rinogojubelal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/42334561022.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_off00005680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5680 5492 bytes
SHA-256: d614c5ff6c7ec99733808c6bddcecd6cd77fdbc331dd2dfa66aa81a8b43c79cd
font_01_sfnt_off00006901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6901 9788 bytes
SHA-256: 842217167ee61523157a029fa8b21674d22b3ff1197aae59bd044719582621e5

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