Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ea4c1203c10f40…

MALICIOUS

PDF

49.3 KB Created: 2020-10-31 08:41:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 000b7ab409c1324b51adc0af0c3b5b26 SHA-1: 2faa990e65cf48305d965f428a28d511cb146927 SHA-256: 30ea4c1203c10f402b03d9264e466615a90760dd3be996222da1332ed2fd65c4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to redirector infrastructure designed to lead users to malicious sites. The document body text, though garbled, includes the phrase 'What is deterrence theory essay' and a URL that aligns with the heuristic findings of a malicious redirector and a PDF link farm. The ML classifier strongly indicates maliciousness, supporting the conclusion that this PDF is designed for phishing or malware distribution.

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://gettraff.ru/aws?keyword=what+is+deterrence+theory+essay In PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/dobot-suxef-tujumev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mejifavo/tomanixo.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/how_low_can_you_go_lyrics_chris_brown.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6827/2039/files/fuwigijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/7781/4422/files/rugisumugomuwex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0126/5566/files/williston_central_school_phone_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8087/0805/files/rcog_guidelines_for_gestational_hypertension.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/lujorewexokasipubine.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/classifying_conic_sections_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9001/6424/files/diptyque_tam_dao_sephora.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 2

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_off00008241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8241 5108 bytes
SHA-256: 6cac3620dd44bcd7e2b24d21d8253573ed569ceb88a18c176b9b567563cab3d3
font_01_sfnt_off000093ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93AD 11164 bytes
SHA-256: 84e1c089ca213e950a6f9a680827c8140acbe885d3766855c32c65678f24fb49

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