Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e9d2b3183c73ae…

MALICIOUS

PDF

43.5 KB Created: 2020-10-02 10:36:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1916b7e8908b43ecd850ec1b31733f0b SHA-1: 26fccd9b2755a13cc4634e30034af6d6ba115bf7 SHA-256: d3e9d2b3183c73ae813651c06f9421896062c1079dcad80ef685d49f0a671503
194 Risk Score

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://gettraff.ru/strik?keyword=custom+gamecube+controller In PDF document text
    • https://site-1037839.mozfiles.com/files/1037839/73896477560.pdfIn PDF document text
    • https://site-1037178.mozfiles.com/files/1037178/fasonuxopulemip.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/94615353191.pdfIn PDF document text
    • https://site-1038705.mozfiles.com/files/1038705/wifitijapavipaxero.pdfIn PDF document text
    • http://files.nybeliever.com/uploads/1/3/1/4/131406885/migubirumimedev.pdfIn PDF document text
    • http://fulewam.hambleden-wi.org/uploads/1/3/1/6/131606666/839b9.pdfIn PDF document text
    • http://files.willowfree.ca/uploads/1/3/0/7/130740344/xiwodufa.pdfIn PDF document text
    • http://files.wildhearthandmade.com/uploads/1/3/2/8/132814589/nevex-rajada-kabufaxar.pdfIn PDF document text
    • http://files.greeceadventuretrips.com/uploads/1/3/1/3/131398430/9279562.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4399/0939/files/dejawobotubozinesozepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0094/7103/files/morubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0456/4857/6679/files/maeda_escarpment_pronunciation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2155/6122/files/81616472797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1560/9761/files/12754874649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/9724/2008/files/fast_start_2.0_rodan_and_fields_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2153/1293/files/wiferanifim.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED9 5116 bytes
SHA-256: b63716d6505efe891657490faccf7f2127becdb9f755ec5d65161acc886ae944
font_01_sfnt_off00007026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7026 10096 bytes
SHA-256: d29bc32fa2a9096483e11ff93b3c1f6c17c28e6aac2e86d65a7d888231c760a0
font_02_sfnt_off000092ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AE 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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