Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f782ab45d44323c…

MALICIOUS

PDF

45.0 KB Created: 2020-09-21 17:37:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ab5f90ec1b44d7b30047ca0be8a7aa5c SHA-1: ff6006f58e78145043006f5ee4b5e9728a77f550 SHA-256: 0f782ab45d44323c098ecad447a3264ddbfc4536ecdd3a106e5e16120eeb06d0
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://ttraff.link/wix?keyword=asphalt+8+hack+apk+download+unlimited+money In PDF document text
    • http://files.polepressuretexas.com/uploads/1/3/0/9/130969370/fuvelalenozo.pdfIn PDF document text
    • http://files.rockinrobinonthegreen.co.uk/uploads/1/3/1/4/131407112/1530221.pdfIn PDF document text
    • http://ragopom.garnerbass.com/uploads/1/3/1/4/131483138/lufaxepunux.pdfIn PDF document text
    • http://feregom.blackmonmarshall.com/uploads/1/3/1/4/131438873/tilolorolosa_bokoki_movitixuxaxa_wovotuk.pdfIn PDF document text
    • http://files.darmatechnology.com/uploads/1/3/1/1/131164295/bolupuxogowuvolebu.pdfIn PDF document text
    • http://files.slimemakerexpo.com/uploads/1/3/0/7/130739154/xaferoroze-talenazuso-jelowitejoziwim.pdfIn PDF document text
    • http://mebudot.the1diamondlifestyle.com/uploads/1/3/0/7/130775826/tokomazowofek.pdfIn PDF document text
    • http://gunuroja.simplydoodles.org/uploads/1/3/0/7/130776661/b7dda1f9.pdfIn PDF document text
    • http://files.kuwaitikuwait.com/uploads/1/3/1/4/131437983/laxaxawijovu_sogamuvuj_limulapidozo.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/1/0437/5016/2583/files/final_fantasy_8_players_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2615/3371/files/91647533516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/ben_carson_books_think_big.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4179/0871/files/dough_sheeter_canada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1164/files/8658038081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9040/3737/files/93920289449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/31601470519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2696/3865/files/how_to_download_google_drive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/9768/4885/files/bu_jhansi_exam_date_sheet_2018.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_off00007199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7199 5660 bytes
SHA-256: 08976924476a35bef808031b30992f0b68a84e9d49b02b1e67f7db7646a75e89
font_01_sfnt_off000084d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D0 9984 bytes
SHA-256: 0362dc8d203a6adfbc836802dcf97241388f097bf0d59f0cd507740da46c66fe

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