Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b5d6086f9b32577…

MALICIOUS

PDF

44.4 KB Created: 2020-11-06 14:26:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 0c9d204d8a1d2011245289eaa89c85f9 SHA-1: 36d8ac02656718ff3bec0bfb6bcbe2283a76b2c0 SHA-256: 6b5d6086f9b32577d7bd7b3c1472a0e8463ea99f1d27c5004c2474285e5e7547
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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/123?keyword=salem+sabres+soccer+va In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5fa4470d5dc4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413468/normal_5f95863b93dbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383582/normal_5f90b967ee60f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384642/normal_5fa021f04d957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381294/normal_5f9211c12c056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f89954e61993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f96a0ed7f38e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5f9fd24e2761e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jivala/stellaris_biological_ascension_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/richmond_county_nc_register_of_deeds_office.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/bahaya_penggunaan_narkoba.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_off00004329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4329 3136 bytes
SHA-256: 6487091c0070741e646db4a1cda49bb5dd8928231115cd9838b724a369c8679e
font_01_sfnt_off00004e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E54 5248 bytes
SHA-256: bcb669685fb98b227968160181ee4ae038810d0f33e25e7581e6ae62b5dcfa00
font_02_sfnt_off00006018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6018 2964 bytes
SHA-256: c4336e3ca5f73bb400c9fe5896dd8722d23a0783d59143d080126fe4294a340d
font_03_sfnt_off00006c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C90 10100 bytes
SHA-256: bb50f90f28945a6895240e1c3f05d3737003f49b1148939e00cbbf8cc4d4c1d0
font_04_sfnt_off00008eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB1 16168 bytes
SHA-256: 0216150ac0e5ade23b072752459620ec704bdac01526bfbadd96d51f96873ef3

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