Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b32d54fa47659aa…

MALICIOUS

PDF

40.6 KB Created: 2020-09-30 17:41:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 31be179454c109ab9a314e07643d7eb7 SHA-1: e56ca41dc7556952b9b2291a74b35be1a30cbb3f SHA-256: 7b32d54fa47659aa5f05bd277ab85ed24ea759020465d3ac712f2e6b7c9abc3e
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://cctraff.ru/strik?keyword=digital+ammeter+circuit+diagram+pdf In PDF document text
    • https://site-1036812.mozfiles.com/files/1036812/11168833322.pdfIn PDF document text
    • https://site-1037260.mozfiles.com/files/1037260/rugositukavapiwirijek.pdfIn PDF document text
    • https://site-1037044.mozfiles.com/files/1037044/38757263557.pdfIn PDF document text
    • https://site-1036965.mozfiles.com/files/1036965/98941312675.pdfIn PDF document text
    • https://site-1037848.mozfiles.com/files/1037848/fudofuretofarexamijisek.pdfIn PDF document text
    • http://fogewib.picardlab.org/uploads/1/3/0/7/130776850/5112549.pdfIn PDF document text
    • http://mabeve.smartdecorandmore.com/uploads/1/3/1/1/131163943/c68bc8215a4.pdfIn PDF document text
    • http://files.aimeetayagphotography.com/uploads/1/3/1/6/131606360/1e269f51d4e1b1.pdfIn PDF document text
    • https://site-1036625.mozfiles.com/files/1036625/12456021479.pdfIn PDF document text
    • https://site-1036876.mozfiles.com/files/1036876/videgugadujikutipubobugun.pdfIn PDF document text
    • https://site-1036716.mozfiles.com/files/1036716/72627690778.pdfIn PDF document text
    • https://site-1036730.mozfiles.com/files/1036730/xawipesoludepafap.pdfIn PDF document text
    • https://site-1036818.mozfiles.com/files/1036818/sosoz.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://cdn.shopify.com/s/files/1/0434/6147/6504/files/gazedelonoxisoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7593/5135/files/studies_on_bullying_in_schools.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5816/6949/files/jovup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3345/1926/files/kubifunafijovopoxutusub.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000541f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x541F 4964 bytes
SHA-256: c3180785e96c1c977bca8b0b02a1fa2ea34d5d5202883300cc2b4b956e58a7ad
font_01_sfnt_off0000650b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650B 9912 bytes
SHA-256: 736da9144e00f2a66bb5c9f6706d17bf6af985d7de6e1bf0b9815ba6cbecc331
font_02_sfnt_off000086f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F1 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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