Malicious PDF — malware analysis report

Static analysis result for SHA-256 97a954ee53d05b96…

MALICIOUS

PDF

67.8 KB Created: 2020-11-30 04:13:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 66dcfec2ddd0f031bf53b646b992f206 SHA-1: abad68fc88c45e3adbdd44261229b4c1b5fbbb82 SHA-256: 97a954ee53d05b96fb4dff88408b9562b1d2570a93a2a7dd1985c841b72bcbeb
244 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and ClamAV, indicating it is likely a phishing or malware distribution lure. The document contains a large number of embedded links, many of which point to redirector infrastructure and disposable hosting, suggesting an attempt to obscure the final malicious destination. The presence of embedded links and the overall structure strongly suggest an attempt to lure users to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffmen.ru/aws?utm_term=dividing+integers+word+problems+worksheet In PDF document text
    • https://vikuxujawud.weebly.com/uploads/1/3/4/5/134515409/1246567.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370541/normal_5f88f3ef641a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374956/normal_5f9b17ee545c1.pdfIn PDF document text
    • https://visimivaxel.weebly.com/uploads/1/3/4/7/134714962/3637251.pdfIn PDF document text
    • https://laripevomed.weebly.com/uploads/1/3/4/2/134266376/0d98e3.pdfIn PDF document text
    • https://woxejisuwu.weebly.com/uploads/1/3/4/3/134322210/negom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445337/normal_5fbf3e6659300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474457/normal_5fa8fba032566.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/d46f7.pdfIn PDF document text
    • https://totelulipax.weebly.com/uploads/1/3/4/4/134469391/93e7a6.pdfIn PDF document text
    • https://juzumefewuw.weebly.com/uploads/1/3/4/7/134766708/3791853.pdfIn PDF document text
    • https://sonefuvik.weebly.com/uploads/1/3/4/3/134325549/6567466.pdfIn PDF document text
    • https://xitonodulamet.weebly.com/uploads/1/3/4/3/134307836/newikep-faxipekuwosebu-suzezi-vafonexa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389366/normal_5fb79dfedabb3.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/febopa/wawokerazizidiribem.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_off0000ca20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA20 5520 bytes
SHA-256: e8132b0218613930fb0b8e37875910e04b93567e7959666b02f4f9898c43b5f2
font_01_sfnt_off0000dcd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD3 11032 bytes
SHA-256: 62b998e94de5c6451bad32890766a40c316235ce4a6cfd98fc3e005787f8db97

Open this report in the interactive analyzer, or submit your own file for analysis.