Malicious PDF — malware analysis report

Static analysis result for SHA-256 acf38960f78919f6…

MALICIOUS

PDF

38.3 KB Created: 2020-10-26 19:02:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: f8e43e8a894ee155f786e33bb3db3af1 SHA-1: 247e308ee298f3c7a1978dbbf822eeb2938d6d97 SHA-256: acf38960f78919f67d5a7cb3b5436d7e407327686c40ef9ab175794e3290c2f4
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/123?keyword=the+prada+plan+2+free+download+pdf In PDF document text
    • https://namonizumus.weebly.com/uploads/1/3/4/3/134345036/vejusopeduwur.pdfIn PDF document text
    • https://lafetewefovizav.weebly.com/uploads/1/3/4/3/134385578/fazajirutapilalidal.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/surere.pdfIn PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/b65856394279cac.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/xawazugamedexot.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/b920a5085.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/duwivif.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/zedoruno_raponebunizoze.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000572f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000572f.bin)
    • https://cdn.shopify.com/s/files/1/0500/7409/1691/files/bidowaniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6197/5971/files/candy_box_2_puzzle_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0652/5079/files/developing_assertiveness_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4100/4954/files/lumizixozonejuwijujaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f39275a-b660-41a2-869c-26398dce8630/14797874192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/822f9dc1-ef82-41b5-b311-f969fb3c0092/70014591851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeaf48b9-b277-4a90-b730-353d4aeb8f19/aerosoft_crj_700_900_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/85498753470.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/temperament_scale_for_adults.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/fewovezozuzurupowugo.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/gasoradevaberozuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65c3d888-09e8-4fe7-aeda-1f3e862480af/19909696667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/032c6c8d-da00-4850-b829-d0a3aaa03c6c/33210697561.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_off0000572f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000572f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x572F 5124 bytes
SHA-256: bf30b9d933a2ad1e8b750e15d2d3f22fdec9099db1f19f570493aeb54f05c435
font_01_sfnt_off000068ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68AE 10152 bytes
SHA-256: 475fda7222f9de41711966ec74b467481a60fa4d2e249471544a469bffaedeca