Malicious PDF — malware analysis report

Static analysis result for SHA-256 60337eae75c61648…

MALICIOUS

PDF

41.8 KB Created: 2020-10-09 06:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: dd57045da5e23a8421c362ce38193d0b SHA-1: 9532f58327e473432aec526331ea7fd1528b25c6 SHA-256: 60337eae75c61648c843d201dddb81dc0f28a087424a26fb183866325659e583
124 Risk Score

Malware Insights

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

The PDF contains embedded links and text referencing 'Union bank of india atm renewal form', strongly suggesting a phishing lure. The primary malicious URL identified, 'https://cctraff.ru/strik?keyword=union+bank+of+india+atm+renewal+form', is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely related to credential harvesting or malware delivery.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=union+bank+of+india+atm+renewal+form In PDF document text
    • https://site-1038753.mozfiles.com/files/1038753/jimerebo.pdfIn PDF document text
    • https://site-1040424.mozfiles.com/files/1040424/28130967315.pdfIn PDF document text
    • https://site-1040008.mozfiles.com/files/1040008/winomej.pdfIn PDF document text
    • https://site-1039954.mozfiles.com/files/1039954/30805781062.pdfIn PDF document text
    • https://site-1042191.mozfiles.com/files/1042191/56884915917.pdfIn PDF document text
    • https://site-1042193.mozfiles.com/files/1042193/wuzezigajivejugad.pdfIn PDF document text
    • http://gimegar.readingswithkaren.ca/uploads/1/3/2/7/132740435/xitubavupu_bokebopavi_fezogetevotalu.pdfIn PDF document text
    • http://lajonazet.lifeingraceland.com/uploads/1/3/2/6/132695306/lonolanosaf.pdfIn PDF document text
    • http://files.outside-tuincreaties.com/uploads/1/3/2/3/132302846/dopefizigojipil.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/1/0429/8512/8099/files/one_syllable_verbs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2224/4264/files/unit_7_subject_verb_agreement_lesson_45_intervening_prepositional_phrases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/0001/7318/files/xapesebipigibanobafusaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6024/3879/files/dozedudavoguf.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_off00006718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6718 5160 bytes
SHA-256: a7f2052dfcbad716491b3b95732352156e7a0468e8f98ac3490fa923c07b6f06
font_01_sfnt_off000078a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A9 9880 bytes
SHA-256: fb819fee787ca223eae2c36e4256c7115cd0cdcff80b47521f809dd36f9231bd

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