Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dfa25e7eda073c4…

MALICIOUS

PDF

45.3 KB Created: 2020-10-17 16:45:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 47460622d4c77e4ad5c00af8a685c3c0 SHA-1: eeda2aae5d260d52d4a6841656c060f24acdb48c SHA-256: 8dfa25e7eda073c4de8cc8b3ffd81038f6768936b3e901842c7c506ca17c950e
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://gettraff.ru/123?keyword=rapid+clinical+pharmacology+a+student+formulary+pdf In PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/sixukejomiwewanage.pdfIn PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/nekijorowudexa.pdfIn PDF document text
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/7ef04787c1.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/risunave-wobugar-bepavajug.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ramugimexixepaba.pdfIn PDF document text
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/zuguvubomawa.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/zebapesuluboxaj.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/ead64c6e.pdfIn PDF document text
    • https://kuguzozivef.weebly.com/uploads/1/3/0/7/130739994/c0725157b9f0.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/14346ebfa70b652.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/d54f4d96cedca1.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/3862513.pdfIn PDF document text
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/1816213.pdfIn PDF document text
    • https://soxajenukaru.weebly.com/uploads/1/3/0/8/130874283/wosijope.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/sotorumitarotu.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/1487408.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/6808592.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/1/0435/5542/2369/files/somali_to_english_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6002/2433/files/papa_johns_hand_tossed_crust.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/brad_paisley_setlist_jones_beach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5801/8472/files/10204626473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6657/0924/files/best_animation_software_for_android_development.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/074de68b-6d21-4e1d-a14f-897886c526b5/pogizatesawoketitinuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12460bcf-7db8-4006-b63c-ad7b4e18a6ba/56654757926.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7014 5680 bytes
SHA-256: 7bedd33f96a3983603b0cdbbdb5d8d5f4918bb3b589a24c1a159ad50d3e87ba1
font_01_sfnt_off0000833a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x833A 10476 bytes
SHA-256: 5f177376ab7fed5beaa4b6b3e5205d46b018c321e12a91cd5b61b8a8b2172fb0

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