Malicious PDF — malware analysis report

Static analysis result for SHA-256 648e422873d145ed…

MALICIOUS

PDF

50.1 KB Created: 2020-07-28 12:27:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0c21fa5d0ff55d54c4e4223426f7a1f SHA-1: 6089ee8533b75ebd9620b7720b678ab10eeda6b9 SHA-256: 648e422873d145ed09f6ec2fa1f59bab41dc4b382c1758c34d43a97e97bc5195
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO link farm, directing users to a redirector URL that likely serves malicious content. The ML classifier strongly indicated maliciousness, and the PDF structure suggests an attempt to disguise malicious links as legitimate downloads. No scripts were extracted, but the overall pattern points to a phishing or malware distribution 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.ru/pify?keyword=africa+map+printable+pdf In PDF document text
    • http://files.pillowstudios.com/uploads/1/3/1/4/131407351/noluzewimoxi_kurumonab_kexovajef_vapeduzixa.pdfIn PDF document text
    • http://files.prairieviewproperty.com/uploads/1/3/0/9/130969346/6098996.pdfIn PDF document text
    • http://files.jesswebbart.com/uploads/1/3/1/4/131455543/kugebubu-fekeberuxapokew-zexifubugalig.pdfIn PDF document text
    • http://files.drizzleandshine.com/uploads/1/3/0/8/130874567/2149353.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/1/0435/3438/5303/files/468529980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/57423693239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2694/7989/files/mumonubilusoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8167/files/75292572333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9743/8875/files/zulute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/tokusokijumalozox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5387/4329/files/marezemorabekolovujosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3729/3718/files/jowaneripogejobera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/6837856528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/serufexibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/1689613433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0014/3777/files/gupatadukudisimudawafel.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 8

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_off0000883f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x883F 4932 bytes
SHA-256: db9a298cb333f230b3829a61c038d95aec79349f1d87706c43447642006926aa
font_01_sfnt_off000098d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98D4 9984 bytes
SHA-256: a69d27f0c9516b463a59a6e3e54479e0d7a727618a3b19a202e10b1b2d3fc9b7

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