Malicious PDF — malware analysis report

Static analysis result for SHA-256 982605e57f4d6c37…

MALICIOUS

PDF

39.9 KB Created: 2020-10-05 04:20:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: e46be95ee2736179d1f6461d130c69ce SHA-1: 764949be22517ea6921d0fba8c902e8361193f50 SHA-256: 982605e57f4d6c373bc35b650e4eec08995e0b0e46f44f617b540775e2a774b4
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/pify?keyword=medical+terminology+matching+worksheet In PDF document text
    • http://vajenepov.theforestworkshop.com/uploads/1/3/2/6/132682646/d47900ecf825c32.pdfIn PDF document text
    • http://files.blessedbemidwifery.com/uploads/1/3/1/3/131381374/9373480.pdfIn PDF document text
    • http://zokodo.lieslmcpherrin.com/uploads/1/3/1/4/131406861/xekopokigiful.pdfIn PDF document text
    • http://files.mathwitheeesinc.com/uploads/1/3/1/3/131398449/lotufatezarokunasa.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/723c458c-4964-4b74-9656-4f22596f7ea9/26541856831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/894b0aa1-42e1-4789-b3e3-51f1bedca738/gazivajap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31d58463-4ef5-4608-b247-bccbeb31b616/90315501317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0ff8430-dbe7-4734-a95a-4b27bb6a7ec6/muzupenopaxiligijulalem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5381/7749/files/savebipuvojasad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3256/2842/files/world_religions_chart_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6139/3061/files/mimecast_personal_portal_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8233/7444/files/91856739723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5757/0207/files/53886509075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5230/8901/files/pdf_physics_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4195/5221/files/clash_of_clans_hacks_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9053/7373/files/what_is_a_graphic_feature_in_reading.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 5

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_off00005db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB0 5616 bytes
SHA-256: a646d5772c16c573336c338682b821e01ec7b77cbc7347f1a253ab2529319fe5
font_01_sfnt_off000070bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70BC 10000 bytes
SHA-256: 239b89e126b103f9b89b554d21da4949c2c3c77293557c0200e95e133a9cda19

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