Malicious PDF — malware analysis report

Static analysis result for SHA-256 788b01af46f6bbb9…

MALICIOUS

PDF

34.2 KB Created: 2020-08-08 20:39:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9d0e3348a1cb3fa72f78ef40c39a17f SHA-1: 8c922fad5b011801f05ade0846b280b60d6a9c87 SHA-256: 788b01af46f6bbb9090db2e49d5c3e26aa045539db8440ea5fa807c324277320
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users to a redirector, which then points to potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of multiple SEO-optimized links suggests a phishing or scam campaign. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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=partituras+para+piano+corazon+de+ni%25C3%25B1o+pdf In PDF document text
    • http://files.thewaveinspired.com/uploads/1/3/1/1/131164375/9136401.pdfIn PDF document text
    • http://files.lmnaturalhealth.com/uploads/1/3/1/4/131453823/wunuxiz.pdfIn PDF document text
    • http://files.outloudtheatre.org/uploads/1/3/0/7/130775756/xolezixevikopijifi.pdfIn PDF document text
    • http://files.feministpestcontrol.com/uploads/1/3/2/7/132740343/mivijez-fakewejopuwuxa-purodimifum-naronepedik.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/1/0427/9900/5863/files/osrs_earth_altar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7725/5836/files/tapamuvot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/pdf_to_word_converter_download_free_full_version_cracked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/38401678064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2541/5843/files/25818400702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3678/7356/files/icd_10_code_for_bunion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/zikiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2806/5949/files/juwesopexunufinibumakufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/sela_turcica_parcialmente_vazia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/amazing_johnathan_death.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/64709943434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/kuvosu.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_off000045a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45A5 5380 bytes
SHA-256: 6e22e5e40cd70fea696ae6b51b9ca4bfbae80c5a12d84abbd15bb031f84d38ad
font_01_sfnt_off000057c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C9 10424 bytes
SHA-256: e8b3737cab8b911a03fe2d9490bb19dfd3983c8a6a0d43fd400b05a470f7b0db

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