Malicious PDF — malware analysis report

Static analysis result for SHA-256 aee6c9554a020aea…

MALICIOUS

PDF

45.2 KB Created: 2020-10-18 00:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8869218a532dbb1563151a5b1469990b SHA-1: c81b9ea2f0e48cbdc0f9e501da921ce00f5f3a69 SHA-256: aee6c9554a020aea9117271c58178ce07591b81ad1bc3960994f60911371564f
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/123?keyword=zenonia+5+mod+apk+download+offline In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/7404194.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/suguxofelak.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/lojusunop.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/3628298.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/5620724.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/mejulemi_vogexowa_gozoxegunisiza_vulalipureludi.pdfIn PDF document text
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/ebd2dd66f69ebd0.pdfIn PDF document text
    • https://tedomidile.weebly.com/uploads/1/3/2/7/132712102/pazufososegaruvoko.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/1/0485/9271/5941/files/walgreens_neti_pot_kit_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/zuzemofegazabusufeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6091/0997/files/69305488448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2219/5607/files/worm_zone_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9374/5046/files/thats_a_wrap_word_whizzle_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4848/7070/files/bekajemigoxilinare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/whatsapp_for_dual_sim_android_phones.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000727e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727E 5148 bytes
SHA-256: 2c7a4cde172a7def89a3c4372578a515a3ee138d75830612efe688742f34f34e
font_01_sfnt_off00008416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8416 10480 bytes
SHA-256: a0318a92acad53b3b3e6b59aebde583b7431524b71c6f8e25afc13f0425ea977

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