Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9fe876956b61156…

MALICIOUS

PDF

45.5 KB Created: 2020-10-15 15:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 89b3a5e7f64ed694bd932abcff8e1b7e SHA-1: 5754d6349c8fbe0f482475920732db7320da40cc SHA-256: d9fe876956b61156dc8724711f3206b61053e786c81e774e66558b515af927c1
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=download+game+android+winning+eleven+2020+apk In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/gapovowumepekegosiza.pdfIn PDF document text
    • https://misopiwulasi.weebly.com/uploads/1/3/1/8/131856666/funumifeleni-guzepebuzo.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/wowabaxisefidet-nikuvajekibesim-napoxalapa.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5401885.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/4700299.pdfIn PDF document text
    • https://welavofewefose.weebly.com/uploads/1/3/0/8/130813025/5ebdd91074a5.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/salopuro-dawibibidir-rebofekoninufam.pdfIn PDF document text
    • https://site-1043608.mozfiles.com/files/1043608/togapegosunawofuzobemo.pdfIn PDF document text
    • https://site-1043651.mozfiles.com/files/1043651/wuliv.pdfIn PDF document text
    • https://site-1040885.mozfiles.com/files/1040885/fujukowidatiwazasufox.pdfIn PDF document text
    • https://site-1037172.mozfiles.com/files/1037172/radotobirotagopageni.pdfIn PDF document text
    • https://site-1040399.mozfiles.com/files/1040399/dilamar.pdfIn PDF document text
    • https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/2faaddb.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/4867245.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/e2c385948.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/1/0434/4912/2972/files/20409942256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2552/3103/files/72211840511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7205/6215/files/54711121677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7719/2865/files/way_of_the_wicked_pathfinder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1324/5598/files/zeramamagafalabetigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2682/7432/files/the_little_book_of_hygge_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/9644/2527/files/89999601994.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_off00007215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7215 5592 bytes
SHA-256: 2e660532b7a12abb686dcbe9be85f2ec54781f2100b555baa2833099eb026cf2
font_01_sfnt_off00008524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8524 10264 bytes
SHA-256: 022aa1b837b3e840ed3144a3859de772f1f738616f44953a252f00a2e1b0c39f