Malicious PDF — malware analysis report

Static analysis result for SHA-256 77b5fcb29c50a31e…

MALICIOUS

PDF

46.4 KB Created: 2020-09-10 02:50:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80a69e1353a4c0c5ea0f6dec1c3b6566 SHA-1: d4e81fcac6c66346a692545850ce37c725468047 SHA-256: 77b5fcb29c50a31e6d230c2d53528fbea65d8fe647a0c4e5dc804d550e6e8ced
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are identified as part of a link farm and redirect to malicious infrastructure. The primary redirector URL is `https://ttraff.me/wix?keyword=capitalismo+comunismo+y+socialismo+pdf`, which is likely used to deliver a malicious payload or conduct phishing. The ML classifier strongly indicates maliciousness, and the presence of multiple SEO-related links suggests an attempt to disguise the 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.me/wix?keyword=capitalismo+comunismo+y+socialismo+pdf In PDF document text
    • http://vovigog.riverglennkennels.com/uploads/1/3/1/4/131454215/nixezexirazezib.pdfIn PDF document text
    • http://zuxes.emilyrochford.com/uploads/1/3/2/3/132302984/punizuletapal-vimomosipafe-nubopexije-livewadop.pdfIn PDF document text
    • http://files.isabellefournet.com/uploads/1/3/1/6/131606397/zimeziwob.pdfIn PDF document text
    • http://files.ecc-wgpc.org/uploads/1/3/1/6/131606346/vovakimevudafeg_vozigexu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/bd5c68_9d1467b0ea414d4ca6a25b272fe1978b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/15cd4d_c82e1bbfa11e4ff3b4a8075add563164.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b5aed9_adfff963f17244a59235968eb6e450db.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1813b3_cc96c2447e1d4f9b9120ea777fe87a47.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/35578634549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6116/3670/files/biology_book_ib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/89196450946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1104/6556/files/gnc_pro_performance_creatine_monohydrate_5000_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/st_john_the_baptist_westport_ma.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_off000071e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E1 5212 bytes
SHA-256: 77508dc579a8814dfeba11d905f546fa6eb59c0bc6154ca9c93e90b1a11875a8
font_01_sfnt_off00008394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8394 12076 bytes
SHA-256: fc9d28f8b584ae72e9f231a363e720096ff51828b01298f09a374946479c2529

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