Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c066818386d30e6…

MALICIOUS

PDF

58.9 KB Created: 2020-11-08 10:57:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: f92aaa9aabaa29889616342a084e2ddc SHA-1: a61410bb9cbf9535481d335c136400ce987a7509 SHA-256: 4c066818386d30e61da66c9e144f79c9325ec5753ab430c278eb722ebe2931cc
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://traffmen.ru/123?keyword=new+nba+2k19+locker+codes+today In PDF document text
    • https://soxajenukaru.weebly.com/uploads/1/3/0/8/130874283/50cbff319db9.pdfIn PDF document text
    • https://fenolipemul.weebly.com/uploads/1/3/4/3/134341818/9389fd8a55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445331/normal_5fa7ab6fc815e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_5f9c96a149191.pdfIn PDF document text
    • https://fobolobal.weebly.com/uploads/1/3/4/3/134317950/2810574.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/d515c38c-e135-48ed-8c14-0c606dceef08/412816234.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/dovomovurarebivazub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0d98d5e-e366-466e-b3b7-9913aececc46/72272045675.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd764855-dfaa-454c-9513-b603664c0ed0/bajirao_mastani_2015_full_movie_watch_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b25ab00-52ec-4eb1-87b8-ee921e1f69f1/9849321302.pdfIn PDF document text
    • https://s3.amazonaws.com/rasegawi/nca_youth_soccer_league_schedule.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000789d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x789D 5380 bytes
SHA-256: 04c0eaa8f29873a32c17d72401fa037ed1c9fa743e8e57061593503ba9bd8fea
font_01_sfnt_off00008b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B04 1636 bytes
SHA-256: b30d0ca848213b9ec921612c9cedbe9327dae9aaf874f51285f0c718a76d35f9
font_02_sfnt_off0000933c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x933C 11740 bytes
SHA-256: 248fe854d7ff1a9ec8460bb73a95a94dd849c9ee5335184ce2ad4d14fb2477f8
font_03_sfnt_off0000b9ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9EC 16064 bytes
SHA-256: a1d4134fbbda406da346f56ddc1d227e7d80769408e66148f4135eaa65380371
font_04_sfnt_off0000ce92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE92 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.