Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9c9aa1f6f6106fc…

MALICIOUS

PDF

40.9 KB Created: 2020-07-13 18:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 143394b3495b4fb1d776035f405172d2 SHA-1: f8ac2df10718efffc58d47105072e2646f9755a9 SHA-256: d9c9aa1f6f6106fc665fa2f0c73c162a7e09221cf79d4fd7b3b650791c54b2ce
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, many of which point to known malicious redirectors or link farms. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Voodoo lab iso 5 pdf'. The primary attack pattern involves directing users to malicious websites through these links.

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/wb?keyword=voodoo%20lab%20iso%205%20pdf In PDF document text
    • http://files.buythef-ckingdip.com/uploads/1/3/0/9/130969301/413b8646951f1b.pdfIn PDF document text
    • http://files.insomnilacq.com/uploads/1/3/2/6/132695190/ledawekujodove.pdfIn PDF document text
    • http://files.saban-kazim.com/uploads/1/3/1/8/131871644/01cf269ea.pdfIn PDF document text
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.pdfIn PDF document text
    • http://files.darinadenali.co.nz/uploads/1/3/0/7/130739185/5576080.pdfIn PDF document text
    • http://files.majorpalooza.com/uploads/1/3/0/7/130740173/4904676.pdfIn PDF document text
    • http://files.mariahklagge.com/uploads/1/3/0/7/130740496/gixitil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sapemuf.files.wordpress.com/2020/07/zaxagetilu.pdfIn PDF document text
    • https://molejupo.files.wordpress.com/2020/07/60053408961.pdfIn PDF document text
    • https://monojobilala.files.wordpress.com/2020/07/7201212482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/babak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/61420679669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/malunuseruve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/kerezanewupisabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/gogezijufibirowefobexod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesulemenakasisot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9613/8137/files/jifimebefadigal.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_off0000606f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606F 4652 bytes
SHA-256: a4c9ac75d4abfd008816c964f6094e4beebd72e93d094a4a5bf8b1063597fa12
font_01_sfnt_off00007036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7036 11412 bytes
SHA-256: c31ce0d9b0461a35ab03a96feb6222020da8df8a082c9567ca9fa746a0e7e6e5

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