Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a965ed29e99aa0…

MALICIOUS

PDF

46.7 KB Created: 2020-11-01 01:37:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 0fe09a00764dde2dc8d2ce5645b2902d SHA-1: 33bd35a32f18fe47a245ec3058edd2dda9bf8648 SHA-256: e0a965ed29e99aa024c0191fdc3cf43b7281ac80e2083059ba4a9ea285324645
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/aws?keyword=the+software+change+returned+error+code+0x643+1603 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f97d8c27994f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386091/normal_5f8ff6fb483c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385011/normal_5f93ca13daa18.pdfIn PDF document text
    • https://gupaxapofigovi.weebly.com/uploads/1/3/4/3/134356466/wivajutokizo-pajeriwideratu-disovej-junuril.pdfIn PDF document text
    • https://basuxebuj.weebly.com/uploads/1/3/1/3/131379820/70640623dcbdca1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f91665831918.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411479/normal_5f95bd61c84c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408992/normal_5f994aac694dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006625.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006625.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00009f7a.bin)
    • https://cdn.shopify.com/s/files/1/0497/9287/6705/files/contoh_grow_model.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1792/7321/files/97212538672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/6089/8213/files/learn_to_fly_3_hacked_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/homeostasis_interrelationship_in_reproductive_system.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/spa_creative_writing_curriculum_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1149/5862/files/93239708549.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_off00006625.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6625 5792 bytes
SHA-256: 4f20192eb7f1c8f43adf1cc033fa5b221a7d037b4ce68c81619f05fb48291858
font_01_sfnt_off000079ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EA 11016 bytes
SHA-256: ed7d97f8613bf2fd149d5a27f668889601f2100dc5ab87192011ac5734739aba
font_02_sfnt_off00009f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F7A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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