Malicious PDF — malware analysis report

Static analysis result for SHA-256 0085ccda72aa519f…

MALICIOUS

PDF

67.1 KB Created: 2020-10-27 21:06:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 18c47ce2d5232653e8d346f88eca6181 SHA-1: 9f577efd6d3aa6ce2a4ff80839836b81cb7ba8db SHA-256: 0085ccda72aa519f311ac27cea43280f40cb89bbdce413e5ae0d59d357f29e35
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/pify?keyword=it+came+from+hollywood+imdb In PDF document text
    • https://xelefivaj.weebly.com/uploads/1/3/4/2/134234850/7481822.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/9519182ce.pdfIn PDF document text
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/5790861.pdfIn PDF document text
    • https://zuvubexusemeto.weebly.com/uploads/1/3/4/3/134373725/woxesavepuneba-vilazet-minopedowivuja-nuzadiropafud.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/630bbe.pdfIn PDF document text
    • https://laguvibokabab.weebly.com/uploads/1/3/4/3/134383318/sowujib-dafufin-rubulowufigat.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/bikatarefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f889915aff18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f8f5d86e2c94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5f88d63466386.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c530.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c530.bin)
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/63875751387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0878/9150/files/fifa_14_mod_commentary_download_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/9253/1142/files/xunawuwur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0094/5564/files/tufidanupulug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1711/8111/files/fagusilamevetajitem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2439/8528/files/5772240797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8481/4782/files/xodamekelixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9680/5028/files/hamstring_sprain_exercises.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f83fb095-1035-4443-af59-985be4f7d2c7/fulojazik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a9fa656-c123-4ba0-8c37-7dee1f9532de/prophetic_symbols_and_meanings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd871a65-72e7-4e6f-acb4-c601d174643a/98592227456.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad57d217-ddab-432c-8ae9-11970c123198/fotapufiguvidojizub.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_off0000c530.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC530 5352 bytes
SHA-256: ce30742c88b85f94621a9bbc4de209b1f2d506b794bd0cd0a6577fb3881d1e22
font_01_sfnt_off0000d750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD750 12316 bytes
SHA-256: b5aa8f5979d48eb83dd87f73e44690796cb83ebe7b02be480e8f9a69262ed3eb