Malicious PDF — malware analysis report

Static analysis result for SHA-256 5daa98648a0cf4b2…

MALICIOUS

PDF

70.2 KB Created: 2020-11-30 01:46:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 86d1a46e1ab58e2f26e1ab6f6c6d98a3 SHA-1: 6689d6f47955dd2f75a5c2a14cec170cf1b675ee SHA-256: 5daa98648a0cf4b2f5924bd9911b766fffeff9c5ea1c5aae962218d5cbe63cc1
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document is classified as malicious and contains a critical heuristic firing for linking to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to an "Alumni database management system project report". The embedded links, particularly the one to `gettraff.ru`, are likely intended to redirect users to phishing or malware distribution sites. No scripts were extracted, but the presence of multiple external links and the malicious redirector indicate a phishing or content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/aws?utm_term=alumni+database+management+system+project+report In PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/043795dd8e5dc.pdfIn PDF document text
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/pajapovamev.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/firigugixujotov/proving_by_mathematical_induction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42a5ad45-d3dd-42c8-8096-df1db2cb64e4/gunefasuxometo.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/64513782546.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f2ac74e-661c-4b34-9740-4cefad63cf3f/bipuvir.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/91244911703.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/xixozis.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/bhartiya_rail_location_apps.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/insurgency_sandstorm_xbox_one.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/61062186157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e09e4735-5c0e-43ca-8ee4-993cbf09c878/livoxusexope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5124646-bc3a-48b8-a21f-bd0a7dc7f43e/34844465754.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_off0000d413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD413 5700 bytes
SHA-256: cb1a24fa0fe86b8971bdd021c38a5a6fd6ebb134059c07968417a82a049a2021
font_01_sfnt_off0000e76e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76E 10632 bytes
SHA-256: 3a42fd54e2bbc756025a3d69379eb23b844db2cc93725e5ba374c43049bea15d

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