Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d7cc63fe183571…

MALICIOUS

PDF

43.8 KB Created: 2020-09-30 12:54:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c145ed9a31619a3c882f2adaf142788a SHA-1: 56cdabae3d6bdec73248323fdb9ce8821ad9bc0f SHA-256: a0d7cc63fe183571fc29853535bec72de13b93cebd5e55150899361877136925
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/strik?keyword=anorexia+definicion+pdf In PDF document text
    • http://pebazado.getmgetm.com/uploads/1/3/2/7/132710675/vobirajililo_gulonekugasewef_guwus.pdfIn PDF document text
    • http://misokuje.flashfoto.com.au/uploads/1/3/0/9/130969428/bozumixeloded.pdfIn PDF document text
    • http://kiwatarig.alphaoutfitterseqs.com/uploads/1/3/2/6/132695535/34f311f0ecdb.pdfIn PDF document text
    • http://vaxizi.moservp.com/uploads/1/3/1/4/131453870/pugafupotukebemu.pdfIn PDF document text
    • https://site-1036711.mozfiles.com/files/1036711/dimorapimilezavale.pdfIn PDF document text
    • https://site-1037184.mozfiles.com/files/1037184/71303858269.pdfIn PDF document text
    • https://site-1037029.mozfiles.com/files/1037029/98288927684.pdfIn PDF document text
    • https://site-1036636.mozfiles.com/files/1036636/gomijiwibab.pdfIn PDF document text
    • https://site-1037163.mozfiles.com/files/1037163/menukafesokewazarekese.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/1/0431/8353/8331/files/pipomupovewuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2071/2098/files/febamabubela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7282/9078/files/iqiyi_earnings_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6375/4408/files/27200534257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2671/0432/files/88932999642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6729/6936/files/war_without_mercy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6933/6471/files/80388859227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/where_in_the_body_is_carbon_dioxide_made.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/89316873971.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 8

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_off00006f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F65 4996 bytes
SHA-256: 8b23c093340a15e428f15e68da075df47ce5b9cb7a42fff91bc736f0cc643b49
font_01_sfnt_off0000807b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807B 9948 bytes
SHA-256: eea91f689cb6d938f4f2e93111154a2400ae37b39d65e2289feab81fb4ca36e2

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