Malicious PDF — malware analysis report

Static analysis result for SHA-256 6128a9118ed9aa66…

MALICIOUS

PDF

44.5 KB Created: 2020-08-22 14:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1369403863441a66a4427f8c59c23b5b SHA-1: 8b9092491a436a2ef4e6c7d12078a1fa4958ad3f SHA-256: 6128a9118ed9aa66706588baa960471d95ecfd5fe913f86ddd657421e1a9508e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains a URL that appears to be part of a phishing lure related to traffic formulas. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector URL supports a phishing or scamming attack pattern.

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=bremsweg+anhalteweg+reaktionsweg+formeln In PDF document text
    • http://files.southamptonelempto.com/uploads/1/3/2/7/132712163/limopukozedamam.pdfIn PDF document text
    • http://jipef.badshahdesign.net/uploads/1/3/1/4/131438366/431619e4c6b.pdfIn PDF document text
    • http://files.goldlawcolorado.com/uploads/1/3/1/0/131071114/saxov.pdfIn PDF document text
    • http://files.tiloscleanwater.com/uploads/1/3/0/9/130969182/8163648.pdfIn PDF document text
    • http://files.nightofthelivingdead-themusical.com/uploads/1/3/0/7/130739833/jetaxavilubeloxos.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/1/0430/6511/4775/files/ridasaton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/89205967291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6569/1560/files/35924250867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/95289035869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/adobe_audition_cs6_tutorial_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/xetofufekilati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3648/2458/files/risotabopib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/47607255724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/bewunig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1909/0595/files/speed_velocity_and_acceleration_problems.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_off00006f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9F 5388 bytes
SHA-256: 262ce59e7d037f5bf52df08f6d2bafd45d2e9054fb001e4e0a48a7f008617a47
font_01_sfnt_off000081d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D4 10616 bytes
SHA-256: 73187f607e95985bb4515a2f783062353da93b76af27f55a5a6d295e46030283

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