Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ccb987207d524b9…

MALICIOUS

PDF

48.2 KB Created: 2020-10-19 00:15:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2090117b5df1da1bd4ebc69dab86b21c SHA-1: f880bbdc4423930ca6a0245aa15bee4d121abd00 SHA-256: 4ccb987207d524b9ba617e64d2c499280e2ef88ab0b345c039a71bf03da6861f
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a link farm infrastructure designed to redirect users to malicious sites. The primary malicious URL identified is https://cctraff.ru/strik?keyword=how+much+cinnamon+for+abortion, which is flagged as a known malicious redirector. The document's structure and numerous external links suggest an attempt to manipulate search engine rankings or lure unsuspecting users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=how+much+cinnamon+for+abortion In PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/2742576.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7360136.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/2215190.pdfIn PDF document text
    • https://sifizebutu.weebly.com/uploads/1/3/0/8/130814914/b40322e5e0ac010.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ecf31a6-2ae2-46d8-b25e-ed35df87b192/88791853971.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7691023a-ee86-41d0-a585-0a2bf5fab232/20530610301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e90abdb-26d4-4bcd-a433-315484cdf9f8/xajunekukofi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/509a66ce-113c-438d-8055-5a01fae8c294/37733174354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/541144bd-76a1-4163-8354-6645c3acebe1/goselifaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df9b294b-6421-4e06-bdbb-926cfb2c9105/rebinamopajofinesumaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/875328c7-64ce-4e36-8c0a-f8b182c176bf/84877809495.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75dc8177-488c-40cd-82b5-8a60510eb28b/womukonajemaxofawugikiwuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/4501665186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2931/7790/files/92608215642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6564/6999/files/2_strand_twist_dreads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5949/5590/files/resume_in_spanish_name.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b99563c-31aa-451c-a664-39d4677ca0e4/26862875670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29bb9cf9-23f7-46da-aa39-70c968307879/77224069265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0103964d-e889-410b-9d40-3b6eff16a75a/97422028022.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a0131eb-c19d-43aa-83d1-4d1f9927f7d6/89442695666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b25d859-ca24-49e7-9794-f161ed18aaaa/j_cole_kod_download_zip.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_off00007f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8C 5104 bytes
SHA-256: b266044abc7dc561317f013ba62fcadd87a2aa082a19c475c88985704fe8fc3d
font_01_sfnt_off000090d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D1 10144 bytes
SHA-256: 716faaaf77912c9ecbee89259afbf32095d8e5af257970d210cacccfdbd53ec6

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