Malicious PDF — malware analysis report

Static analysis result for SHA-256 72892157c6c48212…

MALICIOUS

PDF

41.7 KB Created: 2020-10-03 15:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: db50e53ccd72ed099b48e2ba17948008 SHA-1: 303fc14feb242ec32e5b4cdebc6e36af986ceac2 SHA-256: 72892157c6c482122b14ef9db16aaf0cf411fcec1b6a2d807f1b3578eecfaa0b
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://gettraff.ru/strik?keyword=masaje+reductivo+antes+despues In PDF document text
    • http://files.madebycas.com/uploads/1/3/0/7/130776058/darixafufu-marom-tozusotuxa.pdfIn PDF document text
    • http://files.epsilonkappatx.com/uploads/1/3/2/7/132712214/82293.pdfIn PDF document text
    • http://files.campdogginit.com/uploads/1/3/2/7/132740982/visoxiregeremek_povubif.pdfIn PDF document text
    • http://redudebiv.abagaelwest.com/uploads/1/3/1/3/131384605/4986989.pdfIn PDF document text
    • http://togivefa.jsklar.com/uploads/1/3/0/8/130873998/4444928.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c9960a9-3b35-4614-9417-7e6a800caff2/91996915511.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e099b74-b886-4ec7-b09b-13271c5c91e0/xigun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abc421a0-6bd0-4096-8743-67e8263a109d/dowodunufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e3bd1de-a598-42ed-a5b9-456906eabcbb/razalodiko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77bdbfea-51ff-42cd-acc0-51ebf4f229ed/93720375875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5347/6771/files/lugunol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9664/3486/files/testament_of_sherlock_holmes_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6876/5848/files/bell_and_gossett_series_100_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5399/8487/files/medea_euripides_cz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7096/2843/files/cherry_coffee_table_with_storage.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 7

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_off000062fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FC 5176 bytes
SHA-256: deee1fb631ddf8ec655ce5c37528ac99ee0ea983d8eba2f5504277bfda0113ef
font_01_sfnt_off000074c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C1 10856 bytes
SHA-256: c1f899ca6541781029e51901e2a8bb85db5ad3b0cef8e7a744e367d4cffe1225

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