Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cfe77d42eba487c…

MALICIOUS

PDF

45.9 KB Created: 2020-10-28 23:13:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c93ad706d8c8d1859ca4f85cfc73a1f8 SHA-1: 2e7cd36f8a1b84c194d8bd18a1065ec9813369c6 SHA-256: 7cfe77d42eba487c94cd28d7c3e597e76738ade511a4db1f9dc372c977c08e25
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 potentially malicious or link-farm infrastructure. The primary malicious link identified is https://cctraff.ru/aws?keyword=is+topanga+canyon+under+evacuation, which is flagged as a redirector to malicious sites. The document's structure and the sheer volume of links suggest an attempt to drive traffic to malicious content, likely for phishing or malware distribution.

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/aws?keyword=is+topanga+canyon+under+evacuation In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f8c22257c45c.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/8582769.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/f05bfeaad59f.pdfIn PDF document text
    • https://sawalodisixujig.weebly.com/uploads/1/3/4/4/134490012/07b709bc4.pdfIn PDF document text
    • https://tanezogifa.weebly.com/uploads/1/3/4/3/134321065/pagizorabizona-neguji.pdfIn PDF document text
    • https://gexumuvebevo.weebly.com/uploads/1/3/4/3/134312536/566060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370762/normal_5f8b7b9b5a2b5.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/jepigupivewezi_mikurorefajexi_ruzesenazoxasa.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/b97e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5f8d409aba79b.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/zeduwaxis_galazomilukema.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/wipotegadodorek/54199961666.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/56684334437.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/31461617066.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/bagotuga.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/85784950519.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/bitsat_mock_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61d9e523-b71f-48cb-aa09-cf60c746fa2a/99235820825.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/55973847866.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/fikanutowaxobutagufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09829f47-d771-421a-a2cb-ea81f8337001/xagukudelefelileni.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_off000073c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C9 5308 bytes
SHA-256: 8275708c8b3530e8c563c3f06a86757342f416cad7b7a5185cc50820df960c48
font_01_sfnt_off000085f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F2 10576 bytes
SHA-256: 0c5e29dfb7d773968f092c315aefa64aa0b7b99810dbd5ec5b819aab8350d651

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