Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb7d821374445e1e…

MALICIOUS

PDF

45.2 KB Created: 2020-10-16 15:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5912f79ea565ed78cf6d558d8c23f426 SHA-1: 5f1b13be9b7e5865b22ded1d1aa2a90136f1b1c5 SHA-256: eb7d821374445e1ee9d1b2a27add1e64c85444b032e51340c02168bee74ec155
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://cctraff.ru/strik?keyword=el+gallito+pasodoble In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1392291.pdfIn PDF document text
    • https://debasomi.weebly.com/uploads/1/3/0/7/130739769/81fc7.pdfIn PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/f15f122f7545534.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/ae6209b98.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/37288358.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/1/0486/4114/7038/files/lg_g5_charger_port.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0527/6070/files/59645547964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6023/8785/files/73445298414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8748/5342/files/esc_guidelines_pulmonary_embolism_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0412/4571/files/99102398939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6176/7061/files/error_code_0xc00000e9_windows_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/6651/3312/files/formato_de_carta_responsiva_venta_de_auto_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/xonedotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3152/3239/files/bioflix_activity_dna_replication_lagging_strand.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a5af475-e06a-42c1-a3f5-4aef6adfff28/lutezok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3af8e00c-3efe-4e17-b472-6f9a34f88106/saxejugilagiriwusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77e7a5e4-7ea1-463e-9734-90042030de47/82506452527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0342/7993/files/combine_into_one_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7915/8948/files/duxujajo.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_off00006fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA9 5128 bytes
SHA-256: 70e8a1d72f103982f1244d54484affe9b36c58d7f62e65b586465129fe373ad1
font_01_sfnt_off00008123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8123 11328 bytes
SHA-256: d08d70717bdc62fb623394fefdaeba431b70bc440ca3aa5ea1429fe50c1b1d73

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