Malicious PDF — malware analysis report

Static analysis result for SHA-256 e442e324ffa6b25b…

MALICIOUS

PDF

48.3 KB Created: 2020-10-25 16:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: cdc3de1201f449b90be661d79cddc9c1 SHA-1: 5e6a36ddb8f53952d84f747134a034d6a84ddf3a SHA-256: e442e324ffa6b25b103ec5069ebfe02bdee37c124bff71f51c6c58de0fddb8c0
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.me/123?keyword=download+xbox+captures+to+android In PDF document text
    • https://vatalinonabalix.weebly.com/uploads/1/3/4/2/134234662/rutav.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/jagisifuwefazaboti.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/limew-ragenugasi-noxananodidulok-kijekelalosuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411231/normal_5f94964b71e9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416501/normal_5f9568fbf4203.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_5f8e4bea9d273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370561/normal_5f8a49712e6ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376621/normal_5f94ac1d4bc18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_5f9414be5e964.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/daburik.pdfIn PDF document text
    • https://tatunonomufobuf.weebly.com/uploads/1/3/4/3/134355176/256982.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/2672066.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/3968285.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/papitav-xadonososo-modikoruzup-ruximotewiwo.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006f24.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006f24.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a59f.bin)
    • https://cdn.shopify.com/s/files/1/0499/7952/3231/files/cours_svt_2_bac_international_maroc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3927/6699/files/12_emerald_tablets_of_thoth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8046/4578/files/sasigimidubovafagade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8794/5622/files/63282371105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8304/5293/files/24037161049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/middle_school_story_ideas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4755/0119/files/best_apps_android_wear.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3398/2618/files/fraction_addition_worksheets_grade_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2201/4390/files/boss_gt_10_manual_deutsch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4564/2663/files/3580206384.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 extracted file (font_00_sfnt_off00006f24.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F24 5248 bytes
SHA-256: 689a0ea1fb9d9113510f82e47cfe44f496aefa41c8ce851f0e7472ea56e30c97
font_01_sfnt_off00008118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8118 10648 bytes
SHA-256: 6d8bc5abbba37d0afb39b5edc42300138e777a270330ccb88ea5215fc3b0a458
font_02_sfnt_off0000a59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA59F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333