Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c9e768737d65cc…

MALICIOUS

PDF

47.3 KB Created: 2020-11-06 03:19:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 672d9644fbaee4d7e57b8514c5dba774 SHA-1: 471ff75ba49bd048cd999f4d536b6f06d3504794 SHA-256: c9c9e768737d65cceb941ed82bd6e85bcb7e9b7878e46a2c2e23836be52121a0
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://traffking.ru/aws?keyword=nissan+murano+forum+2014 In PDF document text
    • https://jawiniralegewo.weebly.com/uploads/1/3/4/4/134492986/dujesu.pdfIn PDF document text
    • https://memarexegota.weebly.com/uploads/1/3/4/3/134366516/1ed8c30d8a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/9ffadd9c-5aa0-4f00-b94e-f373c64ac249/the_north_face_womens_ultra_glide_trail_running_shoes.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/pharmacann_llc_stock_price.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/subtracting_rational_expressions_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d33841bc-d233-4103-8989-a80400080acf/23327074345.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/nifaboteropekixepi.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/dokofejijevuxemijolajeb.pdfIn PDF document text
    • https://s3.amazonaws.com/wisatutadi/resinogegigojanunovanifi.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/50065583008.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/43735454606.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/volkswagen_tiguan_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27a4608c-eb3c-4c89-aeb0-c3a4596f04f1/jirigurunupijebopafuguku.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B04 4948 bytes
SHA-256: d0aae90fca2356059e39641f57cdaaf9ec0354ed36c803b018325ccb0308999e
font_01_sfnt_off00007bb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB0 11524 bytes
SHA-256: 6a4f0a265c8f279d7d99ae72f72b595e0ac6b95c421ce57bf28e7d589959cafb
font_02_sfnt_off0000a2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C4 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71