Malicious PDF — malware analysis report

Static analysis result for SHA-256 980d31fc146de412…

MALICIOUS

PDF

49.9 KB Created: 2020-10-28 11:30:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 8d2c856d7f04d2a5e808a07a69b6539f SHA-1: dae4d300f74334f285bfd34d614c387e8af7891b SHA-256: 980d31fc146de41294633dd31f398306cae0288f5f8e0c382fab80e14c395d28
222 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://ttraff.link/123?keyword=ventura+county+property+tax+payment In PDF document text
    • https://nugaginidej.weebly.com/uploads/1/3/4/4/134475369/fozuvefuvemig_rorom_dosozikuvagul.pdfIn PDF document text
    • https://vimefipivarek.weebly.com/uploads/1/3/4/3/134310944/sazadif-falajafe.pdfIn PDF document text
    • https://sonotipudo.weebly.com/uploads/1/3/4/3/134326760/cc2729052.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/golazipafupexovow.pdfIn PDF document text
    • https://poxuxeket.weebly.com/uploads/1/3/3/9/133997588/16cdb372b.pdfIn PDF document text
    • https://pudijubo.weebly.com/uploads/1/3/4/3/134311311/dopomes.pdfIn PDF document text
    • https://dunujamovexen.weebly.com/uploads/1/3/4/3/134361976/e391f0c1335b.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/renuroz_ligaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_5f8ab4e346a18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381539/normal_5f966ae59116b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405895/normal_5f99081d764db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384030/normal_5f96c71e28da0.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008318.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008318.bin)
    • https://cdn.shopify.com/s/files/1/0435/9186/0379/files/wubuxajub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2376/6980/files/14623186910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9343/7850/files/vijexuwog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7597/4821/files/mewodenifiguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7568/5537/files/66260461287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4e8b7a2-04a1-4ec0-ae99-af2fbbce43b0/rugoraja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb9ca09f-f5e6-4c5a-a2e6-8d60c2ce82a0/abdos_femme_enceinte.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d31d33de-ab16-4190-a487-ec16b4999be7/73339025245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3373/0458/files/letubotanopudujuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6150/8256/files/libused.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/pifokolomorivoxor.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 extracted file (font_00_sfnt_off00008318.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8318 5004 bytes
SHA-256: 4972224fbba86bfdd789bfd464e5420539ecc0aa9e8b024edc6961e8b97be72a
font_01_sfnt_off00009412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9412 11248 bytes
SHA-256: 766be7eb1ceeac3295dd465d808d51734e975a21cdcfd5651ab310e535118e26