Malicious PDF — malware analysis report

Static analysis result for SHA-256 53c5466863ea3a0d…

MALICIOUS

PDF

45.3 KB Created: 2020-09-30 22:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ccdac26031e4fbb14050d5fddd3e29af SHA-1: 25d7603bc3a6a9f1c000804de9905abfd4136f56 SHA-256: 53c5466863ea3a0d62c6eb8703ffb65c72ba827300656bad01906207d2c218f5
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://ggtraff.ru/strik?keyword=ocean+basket+menu+south+africa+pdf+download In PDF document text
    • http://kijeli.newmantoronto.com/uploads/1/3/1/4/131483378/jekatukixazomunar.pdfIn PDF document text
    • http://files.troypreschool.net/uploads/1/3/0/7/130738812/461b01e1.pdfIn PDF document text
    • http://files.poodlesoftampabay.com/uploads/1/3/0/9/130969532/xuseweresugafasixom.pdfIn PDF document text
    • https://site-1037044.mozfiles.com/files/1037044/pawizigijodapepun.pdfIn PDF document text
    • https://site-1036835.mozfiles.com/files/1036835/54655551611.pdfIn PDF document text
    • https://site-1038660.mozfiles.com/files/1038660/ribowatetadarikezovilo.pdfIn PDF document text
    • https://site-1036627.mozfiles.com/files/1036627/bibatemifibir.pdfIn PDF document text
    • https://site-1038583.mozfiles.com/files/1038583/47929092976.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/1/0431/5421/0980/files/79238425109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9065/4885/files/dijuzujolavumisugosajig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2511/1967/files/ten_eyewitness_news_sports_reporter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/99568744699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5591/files/kinematics_graphs_worksheet_maths.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0659/1127/files/xoginesixodapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/58942634970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8742/0835/files/vixukefisavulejajoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1638/0831/files/tyler_mahle_fangraphs.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_off00006a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2F 5716 bytes
SHA-256: 179537381c90f35fe449ee986e2c27b7f802506d250ab92053a42322b616ba89
font_01_sfnt_off00007d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D87 13588 bytes
SHA-256: e66cac210aa4f4e4e0e213e79cccbcadb9b68b42f9d000dbed5bf905a63ff6fb

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