Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8a675edf4ecda1e…

MALICIOUS

PDF

48.6 KB Created: 2020-08-19 04:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a336e42c2ff0e4636ac109312850d131 SHA-1: b99757c2acab612889e549bc01229706ce535a75 SHA-256: e8a675edf4ecda1e29129f016242c5d95439814b011f7f4976406690c51b2e9c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one identified as a malicious redirector and others forming a link farm. This suggests the document's primary purpose is to lure users to external malicious sites. The ML classifier also strongly indicated maliciousness.

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=insecto+chicharra+informacion In PDF document text
    • http://files.accoladeglobal.com/uploads/1/3/1/6/131637850/0a4c83f9d55.pdfIn PDF document text
    • http://files.parketvloerenschuren.be/uploads/1/3/0/8/130814397/7653471.pdfIn PDF document text
    • http://files.animalfineart.co.uk/uploads/1/3/0/7/130776381/5928508cbd278.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/1/0434/1569/9621/files/mawixedeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0198/6723/files/gutewitubojesuvelanipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9601/5773/files/tazufesojusitegefenizoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/51202138130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4843/4840/files/geluj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3010/8577/files/lolixupoxijutifulax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2077/3544/files/vedic_astrology_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/50914147746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1841/5254/files/3712077115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3751/6191/files/37941929611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3516/4835/files/gemunevidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1869/8400/files/assistant_short_form.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_off00007713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7713 5024 bytes
SHA-256: daef9d4fdad54a8b7b2760bebe3eb2ff2dcb258592f31595de061d3d61a056f3
font_01_sfnt_off000087f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F6 14712 bytes
SHA-256: 3d0d7f30ee478c0e16950ad9a412eae99cf02f3ddca5d5e4f3d6c9903913d806

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