Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac53f1e5db2e979e…

MALICIOUS

PDF

42.8 KB Created: 2020-10-09 20:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 36e6d2b7f2c7ce226694d2a711695956 SHA-1: f52c34ba1fcf1c8a4d7838843b4cca018fed79ce SHA-256: ac53f1e5db2e979e11e51540dfb6e3f5003060ddfca16b7886740bdcb463e895
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?keyword=obama+and+soros In PDF document text
    • http://fesimat.labelletraining.com/uploads/1/3/1/4/131409236/4c550de4689.pdfIn PDF document text
    • http://files.mountainspassion.com/uploads/1/3/1/6/131637484/1101297.pdfIn PDF document text
    • http://kadodevi.adelantechc.org/uploads/1/3/2/6/132682878/siwiruba-lebuduj-bunibuzowiwo-vofuxa.pdfIn PDF document text
    • http://files.strangelouvre.com/uploads/1/3/0/8/130874676/putogakenenejix-nunumufaziboba-xavivudedozozu-gitar.pdfIn PDF document text
    • http://xuzudin.alleghenygeneralems.com/uploads/1/3/0/7/130738681/govijoxexa.pdfIn PDF document text
    • https://site-1040329.mozfiles.com/files/1040329/41755785559.pdfIn PDF document text
    • https://site-1037237.mozfiles.com/files/1037237/rakev.pdfIn PDF document text
    • https://site-1043117.mozfiles.com/files/1043117/divun.pdfIn PDF document text
    • https://site-1036909.mozfiles.com/files/1036909/14310077104.pdfIn PDF document text
    • https://site-1036693.mozfiles.com/files/1036693/81822235952.pdfIn PDF document text
    • https://site-1036972.mozfiles.com/files/1036972/zorebemalolozeverosomokon.pdfIn PDF document text
    • https://site-1041082.mozfiles.com/files/1041082/34421054143.pdfIn PDF document text
    • https://site-1039900.mozfiles.com/files/1039900/55029635410.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/9724/5094/files/industrial_report_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5794/3206/files/10539711007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7261/0455/files/boxaxupakikapavalenis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0308/3424/files/pixorexuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/dukatironew.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A4 5108 bytes
SHA-256: 484b1261d1e40c7980507319324063771e33003a3b4a761028852456bc7df3bb
font_01_sfnt_off000078dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DC 11084 bytes
SHA-256: f69797fc0f6590e3b15179b77a00e6a1e80a469b63b1b6eae322f345aa7e70bd

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